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Commander Keen in Aliens Ate My Babysitter!  1991

In the final episode of the Keen series, Commander Keen must rescue his babysitter from aliens using nothing but a gun and a pogo stick. As in Goodbye Galaxy, you start with the pogo stick, which is really helpful. Excellent level design and imaginative enemies make this a fitting finale to a beloved series that is known for simple graphics and gameplay, but excellent replayability and fun factor. A "Special Demo Version" was distributed in North America by FormGen, and a "Promotional Release Version" was distributed in the UK distributor by Precision Software Applications. There are 17 levels in this game, with only the first few playable in the shareware version.

Episode 6: Aliens Ate My Babysitter

Added by DOSGuy


EGA Mode 0Dh

Screenshot of Commander Keen in Aliens Ate My Babysitter!


Commander Keen in Aliens Ate My Babysitter! Special Demo Version v1.0 (341,526 bytes) 1991-11-22 DOS Play online
Commander Keen in Aliens Ate My Babysitter! Promotional Release Version v1.0 (340,100 bytes) 1992-01-17 DOS


I have found no ordering information for this game. It is the only Commander Keen game on id Software's website that doesn't have a "Buy It" link.

Cheat Codes

Customer Cheat

Pressing the [B] [A] [T] keys all at once will give you 99 shots, an extra life, and all the gems. This does not work on early versions of Aliens Ate My Babysitter.

Debug Mode

Pressing [A] [2] [enter] all at once will activate debug mode. (Early versions of the game do not require this step.) Once activated, these keys will perform the following functions:

[F10] [G] God mode
[F10] [I] Free items
[F10] [J] Jump cheat (Note that you will not be able to jump down while the jump cheat is activated)
[F10] [N] No clipping (Be careful. If you fall off the bottom of the level, you'll die, even if you are in God Mode.)
[F10] [Y] View hidden areas in the level.
[F10] [B] Set border color (1-15)
[F10] [C] Show number of active/inactive objects in the level
[F10] [D] Record a demo
[F10] [E] End the current level
[F10] [M] Display memory usage
[F10] [S] Slow motion
[F10] [T] Sprite test
[F10] [V] Add 0-8 VBLs (Vertical Blanking Signal -- this will do nothing for most users)
[F10] [W] Warp to any level
[F10] [Y] Reveal hidden areas