Press F10+F11+F12 together to enable/disable cheats.
Press F6 to add 1000 gems.
Press HOME to auto-advance to the next level until you've reached the end.
Press B to change Gravity Mode
Press F11 to hide GUI.
Press F6 to disable GUI
Press F1 to load level 'ESHub'
Press F2 to load level 'RedHotHub'
Press F3 to load level 'HybridHub'
Press F4 to load level 'Castle0'
Press F5 to load level 'ForeverTube'
Press F7 to load level 'GBall'
Press F8 to load level 'GCastleA3'
Press SCRLK to delete all settings.