Every NULL is a level: its blocks rise and sink with the NULL's own animation. These three are NULLs that don't exist yet. Mint one and the level is yours.
WASD
run
mouse
look · click to shoot
space
jump, twice in the air
1 2 3
orbit · third person · first person
R · M
restart · mute
On touch: left thumb runs, drag on the right to look, tap jump (twice for a double jump) and shoot.