Experimental Gameplay

Experimental Gameplay is a game option exclusive to Bedrock Edition. It allows the player to test some unfinished or W.I.P features that will be finished later on, but toggling it will allow players to have an early look.

Toggling
Experimental Gameplay is found in the world options when creating a world. Turning the option on does not disable achievements, however it can't be redisabled when it is and the world is created. Turning it on on a already existing world will make a copy called "[EX] World Name". The original world without experimental gameplay can still be played, although progress will not transfer through the two worlds.

Features
The point of Experimental Gameplay is for the player to look at some not-quite-finished features. As of 1.14.1, turning it on will give the player access to:
 * Structure Block functionality
 * Structure Voids