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Commander Keen 6: Aliens Ate My Baby Sitter! is a platform game, the sixth in the Commander Keen series as a whole.

Molly, the babysitter of Billy "Commander Keen" Blaze (an eight-year-old genius) has been kidnapped by the Bloogs from the planet Fribbulus Xax, for purely gastronomical purposes. Keen must set out to Fribbulus Xax to save her!

The game begins with a top-down map of the Fribbulus Xax. This is the level select screen, where Billy can walk around and the player can choose the next level they want to enter; however, some places on the map require the player to find specific items (such as a grappling hook) to get through. On each level, Billy has to make his way to the exit. Once a level is completed, Billy ends up back on the overhead map.

The levels are full of enemies, including the club-wielding Blooguards, the Flects which can reflect Billy's shots with their teeth, and Nospikes which charge at him in hopes of impaling him. There are also many deadly hazards. If Billy gets shot or touched by an enemy, or falls into a pit or touches something hazardous, he dies and loses one life.

Thankfully, Billy can stun most enemies with his raygun. He also carries a pogo stick which allows him to jump very high. Other items to find include: ammo, gems that are needed to open locked doors, bonus items which give score, bird-like "Vivas" (100 of them give an extra life) and the rare Queen Viva which gives an extra life.


Commander Keen: Aliens Ate My Babysitter! DOS In order to cross the grabbiter you will have to get the sandwich! (EGA)
Commander Keen: Aliens Ate My Babysitter! DOS Where the game begins... (EGA)
Commander Keen: Aliens Ate My Babysitter! DOS Title Screen (EGA)
Commander Keen: Aliens Ate My Babysitter! DOS Main Menu (EGA)

Promo Images

Commander Keen: Aliens Ate My Babysitter! Magazine Advertisement

Alternate Titles

  • "Commander Keen in "Aliens ate my Babysitter!"" -- In-game title

Part of the Following Groups

User Reviews

An excellent finale to the Keen series Katakis | カタキス (42880) 4.6 Stars4.6 Stars4.6 Stars4.6 Stars4.6 Stars
The final Commander Keen game, and it's great as always! Rensch (216) unrated
Best of ALL of the Commander Keen games Mullet of Death (653) 5 Stars5 Stars5 Stars5 Stars5 Stars
An eight year old genius, a babysitter, and a bunch of hungry, goofy one eyed aliens all add up to one of the best PC platformers ever! Satoshi Kunsai (2074) unrated
The latest and greatest of the series. Steve Hall (348) 4.5 Stars4.5 Stars4.5 Stars4.5 Stars4.5 Stars

Critic Reviews

PC Joker Apr, 1992 69 out of 100 69
ASM (Aktueller Software Markt) May, 1992 8 out of 12 67
PC Shareware Apr, 1997 Unscored Unscored
PC Player (Germany) Jan, 1993 Unscored Unscored


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Even though this is the last game in the series, this was not the last one to be created. Commander Keen 5: The Armageddon Machine was created after Commander Keen 6: Aliens Ate My Baby Sitter! because the latter had to go to retail and that required lead time.


In contrast to the former entries in the series, this game is commercial instead of shareware. FormGen convinced id to put copy protection in the game.

Planned trilogy

This game was planned to be the start of another trilogy and the ending leaves a remarkably large gap for a sequel(s). It even makes a promise for 'the biggest adventure yet' in Christmas '92. The crew then tripped on the distraction that changed the path of PC gaming, Wolfenstein 3D.

Information also contributed by Brolin Empey and John Romero

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Terok Nor (32503) added Commander Keen: Aliens Ate My Babysitter! (DOS) on Jun 10, 2000
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