Commander Keen 4, 5, and 6 Cheat Codes

In-Game Cheat Codes
For the following cheat codes, you must first enable cheating by pressing 'A' + '2' + 'enter'.

Add 0-8 VLBs
Press 'F10' + 'V'

Display memory usage
Press 'F10' + 'M'

Flying jump
'F10' + 'J'

Get 99 ammo and 3000 points
Press 'F10' + 'I'

Get extra life, 99 ammo, and all keys
Press 'B' + 'A' + 'T'

Press 'F10' + 'G'

Record demo
Press 'F10' + 'D'

Select level
Press 'F10' + 'W'

Set border color
Press 'F10' + 'B'

Show active and inactive object numbers in level
Press 'F10' + 'C'

Show hidden areas
Press 'F10' + 'Y'

Skip level
Press 'F10' + 'E'

Slow motion mode
Press 'F10' + 'S'

Sprite test
Press 'F10' + 'T'

Walk through walls
Press 'F10' + 'N'