Tutorials/Traps

Traps are a common mechanism in Survival Multiplayer (SMP) built by players to kill other players or mobs automatically. The following is a list of basic traps with a short tutorial that often assumes the reader has a working understanding of the basic concepts required to build the trap. Traps are considered a subset of mechanisms.

Overview
Traps are devices designed to trap or damage entities, also known as "the target." Traps are made up of 3 components: The lure, The trigger, and The trap. In a simple landmine, the lure could be a base behind the landmine, the trigger a pressure plate, the trap TNT. Not all traps have a lure, they may rely on chance or something else to lure the target.

Explosive traps
The traps here primarily use TNT to cause harm to the target. When testing explosive traps it may be a good idea to use a different block such as the redstone lamp, which like TNT, is triggered by redstone but it is less likely to accidentally blow up in your face.

The landmine
The landmine by itself is very inefficient and non-lethal. It damages the landscape and deals little if any damage to players. To make it more efficient, there are many variations you can use:
 * If you want to protect the landscape, you can place water at the bottom of the hole. It will reduce the dealt damage, however.
 * This is really good right inside a door, the player may think it is to open the door.
 * By digging a pit underneath it, the player might fall into it.
 * Try to camouflage the landmine by making it less noticeable, e.g. grow tall grass around it.

Instant landmine
If you are getting annoyed of wasted TNT because people run away from your landmine filled with tons of TNT, you should build a landmine that explodes instantly.
 * 1) Dig a 3x3x3 hole in the ground, jump in, and stand on a corner.
 * 2) On center, place a block of dirt and z rail on top of it.
 * 3) On the rail, place a minecart with TNT. Be careful not to push it.
 * 4) Destroy the block under the rail to derail the minecart. The minecart will fall one block lower, this won't really cause any damage unless you accidentally pushed the minecart.
 * 5) Put a dispenser with flint and steel above the minecart like shown.
 * 6) Surround the minecart with TNT, cover it all up, and place a pressure plate on top.

Redstone mine
Instead of a daylight sensor, you can also use an observer. This trap is good because it is very hard to detect. If you build this above ground, it may seem somewhat out of place, so you should cover the redstone ore with carpet or build it underground.

Tree trap
Instead of using an observer, you can use lever and a NOT Gate.

Death Temple
Setup a BUD underneath the pressure plate in a desert temple. If a player should try to disarm it, KABOOM!

The hidden house
This trap is the opposite of a TNT door trap: The TNT is obvious, while the house is hidden. Make a field of TNT extending about 5 blocks into the ground. Place signs all over the field saying: "Find my hidden house." It lures people in twice: the TNT danger, and the hidden house challenge. The problem is that there is no house! Beneath the field are pressure plates which ignite the TNT, leaving no time to escape, as you are in a field of TNT 6 blocks under.

Explosive house
Griefers love blowing and burning people's houses up. This trap turns the grief onto the griefer.
 * 1) Make a decoy house out of wood or wool (preferably wool).
 * 2) Fill the area under it with TNT and make some "rays" of TNT extend from the house.
 * 3) If a griefer happens to burn the house down, they will probably get a bit more of a bang than they expected!

C4 trap
Dubbed so by Bannablarg, the first to use this with success, this "C4" is a vertical or horizontal stack of TNT with a dispenser wired to a button with a fire charge in it. The dispenser is placed one block above or below the stack (vertical) or one block next to the stack (horizontal). This usually works better for demolition than for a trap, if you want that, you can wire a pressure plate to the dispenser. This works like a flaming arrow hitting a stack of TNT from above. This is another way to remotely detonate the TNT, via flaming arrow. This works better than a dispenser shooting TNT, because the "C4" stays in one place. Also, if only two TNT blocks are used, it works well as a disposable cannon, even better on obsidian blocks, but not in a tube. All evidence of the trap is usually destroyed. Note: C4 trap from below does not work very well.

Pitfall traps
These traps primarily use fall damage to harm the target. Some minor variation can make a simple pit much more deadly.
 * Make checkerboard of cacti at the bottom of a pit. Cacti do destroy items though.
 * To effectively improve the size of your pit without digging a larger area, dig a shallow ring around the top layer of your pit. Fill this area with water so that mobs will be dragged to the center. If necessary, water can be stopped by placing signs or pressure plate. Note that this will reduce fall damage.

Sand trap
When the target walks on top of the trap, break the bottom block of sand. It is a good idea to disguise the trap by making a house on top of the sand. If you do this, you will probably want to put in carpet so as to not make it so obvious. Some variations:
 * You may be able to get the target to break the sand themselves by making the bottom block valuable.
 * You can automate the trap by attaching a piston to the bottom block of sand. If you want to retract the piston when a pressure plate is pressed, use a NOT Gate.

Fence trap
Construct a hallway with a sand, or gravel, floor for an unsuspecting player to walk through. A diagonal hallway works best. Place fence posts underneath the path and drop the material for the floor on the fences. Below the fences, you can have a pit.

This works because when a gravity-affected block falls on a fence post, the block stays as an entity. As a result, a player walking between the fence posts will fall through the sand entities, causing them to plummet. Diagonal hallways make it more likely to fall through the sand without landing safely on a fence post. Keep in mind that the sand is going to look half a block higher than a normal block, but this can easily be covered up. The best part: it does not need to be reset!

Chest pitfall
The player may try to sneak to the edge of the chest to look down the hole. Because the chest is smaller than a regular block, the sneak function will not prevent you falling. They will die of fall damage and their items will fall into the hoppers and chests, where you can collect them.
 * 1) Dig a 2x2 hole until you reach a reasonable drop.
 * 2) Place 4 hoppers, one per block on the 2x2 hole, pointing into chests.
 * 3) At the top of the hole, place 4 double chests (so 8 chests in total) around the hole.

Painting trap
This is a very easy to make trap which plays on the old secret passage behind the painting trick. The target may unwitingly decide to check for a secret passage behind the painting. Big mistake.

Fake chunk error
Dig a 16x16 hole, preferably in line with real chunks, at least 20 blocks deep. Some inexperienced players may think it is a chunk error and walk in.

TNT pitfall
Build a simple landmine and dig a pit under it. When the TNT ignites, the sand or gravel will fall and the target may be trapped until the TNT explodes.

Fake water pitfall
Dig a hole (2x2 works best) at least 30 blocks deep, the deeper the better. At the bottom place lapis lazuli or other blue blocks. Add a false corridor at the bottom to make it look like it goes somewhere. When an unsuspecting player comes across the hole, they may think that there is water at the bottom, jump down and die. Experienced players are less likely to fall for this particular trap but it generally works quite well.

Snowball trap
Load a dispenser with snowballs (or other knockback item), and connect it to a pressure plate. When the target walks across the plate, the dispenser, if aimed correctly, shoots a snowball and knocks the target into the pit.

Dangerous ledge
If the target happens to wander onto the pressure plate, the piston will come out of nowhere and push them into the lava.
 * 1) Underground somewhere, make a 1 block wide ledge.
 * 2) Somewhere on the ledge, place a stone pressure plate
 * 3) Place a piston so it will push the target off the ledge.
 * 4) Connect the piston to the pressure plate.

Piston pit
Place the piston so it pushes the block the signs are on. You can make up to twelve rows using one piston. Make sure there is a block of empty space at the end of where the piston pushes. Connect the piston to a trigger, such a pressure plate or lever, and when the piston moves it should break the signs and cause the sand to fall along with the target!

Fake elevator
Make what is shown in the schematic, like an water elevator with water only at the top. Make sure the hole is 30-40 blocks deep, which is enough to kill the player. It could help to place a lure sign near the 'elevator' saying something like "Do not enter!" You can also make the signs' text something like a floor countdown like "35", "34", "33", etc. so players are more likely to fall for the trap. If you want, you can place hoppers and with chests so you can gather the loot from the victims, but if you really want the drops, you need a secret passage to the bottom of the pit for collection.

Floating sand pitfall
If you make the shown pitfall, when you break the grass, the sand should remain floating. If you touch the string, it will cause a block update which causes the sand to fall.

False-floor trap
A false-floor trap is a variation of a pitfall trap. It works by creating a concealed safe route through the pitfall (which is usually very big) to allow authorized players to pass, while catching unauthorized players or mobs and killing them. It generally works best when there is no way around, forcing the player to pass through the trap. If anyone steps on one of the pressure plates with TNT under it, the TNT will explode causing the whole bridge to collapse! Note: You will need to have something under the TNT, perhaps more TNT or something easily destructible to make sure the TNT doesn't fall and fail to ignite the rest of the TNT.
 * 1) Dig a pit. The deeper and longer the better.
 * 2) Place use TNT to build a bridge across the pit. It should be at least 2 blocks wide, preferably more as someone could cheat otherwise.
 * 3) Replace some of the TNT with torches. Read the next step to understand which ones to replace.
 * 4) On top of the torches, place sand or gravel. Try to get across the bridge now by only stepping on the sand. Make sure you can do it, because it will be even harder at the end as you must stay off the edges of the sand.
 * 5) Once you have picked a satisfactory path, cover up the TNT.
 * 6) Place pressure plates over all the sand/gravel.

Water traps
Water traps use water to suffocate, trap, or push the target.

Fake water elevator
Make a water elevator using soul sand bubble column up to a fake floating skybase. Instead of an entrance to the skybase, make a indention with no exit. Any players who try to go up will have to choose between jumping out of the water or suffocating at the top.

Drowning room
Make a small room, preferably 5x5x2. Place a chest in the center of the back wall. Then put 2 blocks of sand above the chest with water behind it. As soon as they break the sand to enter the chest, the water will pour out. If you want, you could have an airlock instead of the one-way door. Have torches supporting sand in the hallway to the trap. As soon as the water comes out it will flood the hallway and burn out the torches, causing the sand to fall and trap the player even more.

Trapdoor drowning
This trap is made by digging a 2x2x3 hole in the ground, filling the middle of the hole in with water, and putting trapdoors at the top. Place pressure plates a block away from the trap in a square pattern so that, at the moment, they can't open the trap doors. Between the pressure plates and the trap, place redstone wire to open all the doors at once. When the target walks over the pressure plates it can fall down the water, and the trapdoors will shut, forcing it to drown. At the lowest level of the trap you can make a 1x1 tunnel of water to retrieve the loot.

Retrieval trap
Create a water current that drags the mobs down under a solid block. The current will hold the mobs under until they drown. The loot from the mobs will sink, which can be collected below.

Whirlpool trap
By making air pits in water, you can prevent mobs from getting past. You can also use magma blocks to pull players down.

Lava traps
Lava traps usually use lava to burn the target.

Trapped Chest Lava Pitfall Trap

 * 1) Build the 2 rows sticky pistons such that are facing each other and the rows are 4 blocks apart.
 * 2) Attach solid blocks to the rows of sticky pistons.
 * 3) Link the rows of pistons to redstone torches.
 * 4) Attach the trapped chest to the redstone torches.
 * 5) Dig a hole below the sticky pistons and fill it with lava.
 * 6) Decorate the area around the trapped chest to attract players!

Lava pit

 * 1) Make a 3x3 pit at least 4 block deep.
 * 2) Place lava at the top, ladders in the middle, and water at the bottom.
 * 3) If you get mobs to go into the trap, they will burn in the lava and there drops should go into the water.

Lava ladder
This trap is most effective against unaware players. If an unaware player doesn't look before climbing, they will go into the lava and burn.
 * 1) Build a fake house, not out of wood.
 * 2) Make a ladder up to the second story.
 * 3) Put lava at the top of the ladder.

Lava door
Make a house, and right inside the front door make a pit with lava. A careless player may wander in and, whoops, lava trap.

Trapdoor lava pit
If the target should wander onto the pressure plate, good luck getting off!

Lava filler

 * 1) Make a stone room.
 * 2) Place a pressure plate in the room.
 * 3) Connect the plate to a dispenser with lava in it on the ceiling.

Capture traps
These traps don't actually kill the target. Instead another trap is often used, or the player can come later to kill captured mobs.

Piston trap
This trap is best for 2-tall tunnels, perhaps inside a friend’s mine. Make sure there is a roof over it so when the target hits the pressure plate it cannot escape. When the pressure plate is stepped on, two pistons push up.

Door trap
This is a very simple and rather obvious trap that is made by putting a pressure plate in the middle of 4 open iron doors so that the target is trapped inside when they enter. If using this trap against mobs such as zombie villagers, you don’t have to use iron doors.

Shallow pitfall
Dig a pit 1-block deep hole at least 5x5 blocks. Place fences on the inside edge. Since fences count as one and one half blocks in height, mobs can walk in but can not jump out. Alternatively, line the outside with half-slabs.This can also be combined with a mob grinder, via water currents leading to it. Zombies and Skeletons will take damage from sunlight during the day if the pit is uncovered, making this an effective way to sort out creepers. This design does not capture spiders.

Trapping pool
This trap is designed to trap skeletons and zombies, not to kill them!
 * 1) Dig out a 5x5 square.
 * 2) Dig a 3x3 square 2 layer deep in the center.
 * 3) Place water in each of the corners and in the middle of each side on the top, where the water isn't flowing along the top.

Slime trap
This simple trap targets slimes. All you need is some water buckets. Dig a 4x4 hole three blocks deep. Fill the bottom layer with water, so that it is all still water on the bottom. When any sized slime wanders around, it may fall into the hole. Since slimes cannot jump in water, it will not be able to escape. You can come by later and kill all the slimes, however, you must jump in then get the drops. If you are not interested in the drops, just leave them in to lower slime population. This trap is recommended on Superflat survival worlds where you can get water from village farms and easily make the hole and slimes spawn a lot.

Piston traps
These traps use pistons to harm the target.

Crushing trap
This is ideal at the end of a water flow mob grinder as it minimizes drop losses. The design can be expanded to make a long row.

Spring trap
This should be combined with another dangerous element, perhaps a nearby pit?

Hay trap
Get two sticky pistons to rapidly move hay back and forth. If done correctly a player fallen into this trap will be unable to get out. Hay was chosen because tools do not effect the breaking speed, even with enchantments.

Other traps
The traps here do not yet fit into any of the other categories.

The cake is a lie
If the target moves too near to the cake, the pistons will trap them and destroy the cake.
 * 1) Dig down two blocks in a flat area and put a piston at the bottom.
 * 2) Dig down two blocks around the piston and put redstone dust at the bottom.
 * 3) Dig down two blocks around the redstone and put pistons at the bottom.
 * 4) Cover everything up with the block(s) of your choice.
 * 5) Place pressure plates in a ring around the center block, above the redstone.
 * 6) Put cake on top of the center piston.
 * 7) Above the outer ring of pistons, place blocks in the air so there is room to walk under if the pistons are retracted.

Repeater one way
If a redstone repeater is in a 2 block high space, like a tunnel, you will crouch automatically as you walk over it. However, you will not crouch if the repeater is blocking the entrance of a tunnel.

Falling minecart
There is a way to 'store' fall damage in a minecart and later have someone take that damage even though they don't actually fall a distance that would make them take damage. Here is a video explaining how to set the trap up and showing it in use:

Anvil trap
When the target stands on the pressure plates, the doors won't open and while they are confused the anvils will fall on them. They will either be killed or if the anvils don't fall from high enough they get injured. This trap is useful to stop thieves from staling valuable goods, and exploits the fact that people don't look up.
 * 1) Place two iron doors sideways with redstone torches under them so they stay shut.
 * 2) Set up two pressure plates in front of the doors. The plates shouldn't do anything yet.
 * 3) Run redstone lines from underneath the plates onto the roof of your porch to trigger two pistons.
 * 4) Put an anvil on each extended piston arm, and make sure there is a hole through the porch roof down to the entrance where the target stands.

Command mine
Sick of rebuilding land mines that don't even kill the target? Replace the TNT with a command block with the command ' ' and the command block will instantly kill any entity that touches the trigger! If you use a repeating command block instead of an impulse command block, you don't need a pressure plate.

Arrow dispenser
By connecting this to a trigger, you can rapidly fire arrows at the target. Some variations:
 * Place lava in front of the dispenser to catch the target on fire.
 * You can adjust the repeater which will change the speed. You can also completely change the clock if you don't have quartz.
 * You could use this to knock the target into a pit.
 * Attach this to a RS-Latch to keep it on until a button is pressed.

Gravel trap
Probably the simplest trap in Minecraft. Dig 1x1 holes 2 blocks deep; wait for a player or mob to fall in, and then suffocate him with gravel. Get their items out of the hole. Or, make an entire redstone contraption with pistons that release to drop the gravel!

Murder holes
Wandering mobs will not be afraid to try and walk on the signs. If they do, they will get trapped.
 * 1) Dig a 2-wide trench down 1 block deep on one side, 3 or more on the other.
 * 2) Place signs on the deeper side at the same height as the shallow side.

Spider trap

 * 1) Find a cave spider spawner, or hack one in. Probably place a torch to keep it from running.
 * 2) Dig a pit under it. It should be at least 5 block deep.
 * 3) Place cobweb or something for the spiders to spawn on.
 * 4) Break the torch and allow the pit to fill with spiders. You need to be withing 15 block for this to work.
 * 5) Get a player to go into the pit somehow.

Triggers
The traps here are most notable for their trigger and can be connected to many different mechanisms of harm.

Trapped ore
When someone mines the ore the TNT will explode! Be sure to place the torches before the TNT and to not place any TNT next to a lit torch.

Trapped ore 2
Use a piston to push a TNT next to a redstone torch when a block is mined. The advantage of this method is that the trapped block does not need have wires right next to it and that it can cover a wider area.

Furnace trap
Normally people would expect chests to explode, so this trigger will surprise them as soon as they loot your furnace. If a griefer loots the furnace the comparator will deactivate and the torch will turn on, blowing the victim to bits!
 * 1) Fill a furnace with coal, iron and food (you decide).
 * 2) Put a comparator leading away from the furnace. It should turn on.
 * 3) Place a block in front of the comparator.
 * 4) Place a redstone torch on the block, it should turn off.
 * 5) Create a redstone line from the torch to TNT.

Invisible tripwire
This trap relies on the fact that like end portal, trip wire is invisible from the bottom. Make a room or hallway at least 3 blocks high, and put trip wire in a layer on the third layer up. If the victim jumps, they will trigger the trap. How they are captured or killed is up to the player.

Minecart mine
When the target rides the minecart, they will trigger the TNT and get blown up. It might help to disguise the detector as doing something else, like switching tracks, opening a door, etc.

Wrong lever
Place several levers on a wall and put TNT behind it. Place a sign saying something along the lines of, "Which one...," "Don't pull these!," or "Passcode entry >." Eventually a player with too much curiosity will come along and pull a lever.

SCR trap
This trigger detects when a redstone circuit is broken, such as when a griefer is destroying your house. If a griefer walks up to your house, he/she may destroy the SCR, turning on the torch and igniting the TNT.
 * 1) Create an SCR.
 * 2) Make a line of redstone dust from it to the wall of a room.
 * 3) On the other side of the wall from the redstone, put a redstone torch, which should turn off.
 * 4) Pack the other side of the wall full of TNT, and make sure at least one block of that TNT is touching the torch from the side or top.

Chest bomb
If someone puts something inside the chest, it will go into the hopper, turn on the comparator, and activate the TNT. You could attach the comparator directly to the chest, but it would be more obvious as you can see over chests.
 * 1) Place a chest.
 * 2) Place a hopper underneath the chest.
 * 3) Place a comparator pointing away from the hopper.
 * 4) Place TNT in front of the comparator.

Fishing trap
It is possible to detonate TNT that has a pressure plate on it using a fishing rod. This method is undetectable; however, it is unstable and prone to premature detonation if you don't have patience.

Note that this trap seldom works on players, as they will most likely avoid the pressure plate. For maximum effect, it is suggested that you place the trap in front of an iron door, as they are usually paired with pressure plates for easy opening.

Exploding bed
Connect a bed next to a BUD, the bud to some TNT, and cover the whole thing in cobblestone. Then just wait for the player to sleep in it and get blasted sky-high!

Proximity detector
A proximity trap is a player detector paired with an output.

Manual traps
These traps require the player to manually trigger the trap, or perhaps even be the trap.

Grave digging
Ask someone if they could dig down at a spot, perhaps because you lost diamonds there. When they get far enough, cover them with sand or gravel. You can also use lava for a more dramatic death, however, this will destroy their drops as well. This will probably only work on inexperienced players.

Facebreaker trap
If done correctly, the gravel blocks should fall on your target's head, thus trapping or killing him. Hence the name facebreaker. Make sure not to take too long or else the target may escape jumping off the gravel or placing blocks.
 * 1) Make a tower that is five blocks high.
 * 2) Around the tower, dig a pit three blocks deep
 * 3) When the target falls in the pit, drop gravel on the target.

Ore tower

 * 1) Make a tall watchtower.
 * 2) At the top out of sight, put a bunch of TNT
 * 3) Make a vertical redstone path to the TNT with a lever to activate it.
 * 4) Put a lure at the top, and ask someone to go get it. When they get to the top, pull the lever.

Lures
These traps' primary feature is the way they lure the target into the trap.

Signs
Signs are very useful for luring new, and sometimes even experienced, players into a trap. Here are some messages which can be good to lure players into traps.
 * "Free Diamonds!" This could be good on a trapped chest, but would only work on newbies.
 * "DO NOT ENTER!" Most players would be tempted to do exactly the opposite, even into a possible trap.
 * "DO NOT PRESS!" If you see a button, you really want to press it. Especially if there is a sign saying not to.

Chests
Chests, especially when paired with signs, can make a good lure. If you place one inconspicuously in a wooden house, what self respectoing griefer would not go and investigate?

Ore blocks
Ore blocks make an irresistible lure. After all, if you saw a diamond block just sitting there on the ground, would you just leave it there? This lure is good when paired with a BUD trigger.

Fake mineshaft
Abandoned mineshafts are known for lots of loot. If you trap one, you can pretend to have 'accidentally given away directions' to the mineshaft.

Iron door
An iron door looks somewhat out of place in a dark cave. If a player sees one, they may be tempted to go inside. Unfortunately for them, there may only be a pressure plate on one side of the door...

Disarming Traps
When faced with a trap, the safest course of action is often to leave the way you came. If you really want to disarm it though, here are some tips:
 * Don't try to trip the trap and run away. Unless you have a really safe way of doing this, the trap is likely designed to prevent you from doing this.
 * Watch out for observers. These can be placed inside walls and under pressure plates as a fail safe.
 * Don't assume it is safe to break redstone. It is usually safer to keep redstone in its current state. If it is off, it is likely ok to break it. If it is on, it is likely ok to place a redstone torch to keep it on.