Brainmaster

M to open the Manuel (ESSENTIAL)
WASD to move around
W to Jump
S to drop through thin platforms
E to pick up/drop cubes OR shoot
TAB and W or S to switch between shooting and picking up cubes#

Known Bugs:
can't jump on moving platform while it is moving down.
can't jump while sliding down
can't pickup cubes sometimes: jump or go away and come back; and it should be solved.
cubes falling down on the edge of the lower thin platform
and more...