Java Edition Classic 0.0.19a/Development

At least one unreleased development version of the game labelled 0.0.18a_02 was developed on June 19, 2009. They show in-development features later included in 0.0.19a and later releases.

New blocks showcase (June 16, 2009)
Word of Notch post
 * Blocks
 * Glass JE1.png Glass
 * Uses an ugly, very streaky texture. This texture did not make it into 0.0.19a, but did make a brief return in 0.0.19a_01.
 * Sponge JE1 BE1.png Sponge