Press [G] to proceed a generation [1 - 8] to change cell brush (some numbers need to be pressed twice to get all cells) [SPACE] to toggle editor mode (pointless at the moment) [WASD] to move around [R] to rotate a cell 750 blocks lol
I used a editing program to get the colors that are used in the original devlog video. Credits to @codecodcodecod for the original remake and Sam Hogan for the original game.