All levels and unlimited number of games:
Set your system date to January, 1 2002 and clock to
12:01 a.m. The game will let you play any level and an unlimited
number of games until the clock reaches midnight again. SisOFBuni2.
Use aimer (unregistered version): Start the game, go to the top bar, go under difficulty
and select "Child". Play one game of "Child".
Go to the difficulty of puzzle. Open a saved game, and even if
you are not registered, you can use the aimer. kiln.