Commander Keen 9: Battle of the Brains (DOS) - online game | - staré hry ONLINE

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Commander Keen 9: Battle of the Brains - DOS


Game is con­trol­led by the same keys that are used to playing un­der MS DOS. For full­screen press 'Right Alt' + 'En­ter'.


If the game e­mu­la­ti­on spe­ed is low, you can try to in­cre­a­se it by re­lo­a­ding this pa­ge with­out a­ds or cho­o­se a­no­ther e­mu­la­tor from this table.

Other platforms:

Unfortunately, this game is cur­rent­ly available only in this ver­si­on. Be patient :-)

Game info:
Commander Keen 9: Battle of the Brains - box cover
box cover
Game title: Commander Keen 9: Battle of the Brains
Platform: MS-DOS
Author (released): Ceilick (2011)
Genre: Action, Platform Mode: Single-player
Design: Ceilick, Mink, Tulip
Music: Mr. M, ZidaneA
Game manual: not available

Game size:

1100 kB
Recommended emulator: DOSBox

From Commander Keen Wiki:

   Battle of the Brains, also known as Commander Keen 9, is the third and final episode of the unofficial 'The Universe is Toast' trilogy by Ceilick, with the bulk of the modding done by Ceilick, Mink and Tulip, with extensive patching by Levellass and Lemm. Work on the mod began shortly after the release of Dead in the Desert in 2009. It was released in February 2011.
   The story continues where Dead in the Desert left off. After escaping the planet Calidune and being reuinted with his friends in the Bean-with-Bacon Megarocket, Commander Keen learns of Mortimer McMire's plans to destroy a giant star and incinerating the universe. He also learns that Mortimer has a space station containing several transporters which can be used to teleport to distant worlds and locations. One of these transporters is heavily guarded and believed to lead to Mortimer himself. Keen must travel to four different worlds in order to activate the controls which unlock the doors to the final teleporter so that he can stop Mortimer before the universe is toast!

More details about this game can be found on

For fans and collectors:
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Buy original version of this game on or

Find digital download of this game on GOG or Steam.

Game controls:

All DOS games were controlled directly from the PC keyboard. Some newer DOS games also used a mouse or other more advanced game peripherals for control. However, each game was controlled by different keys. You can find a detailed description of how to control this version of Commander Keen 9: Battle of the Brains in the attached game manual. An overview of basic keyboard commands and keyboard shortcuts to control this game is summarized in the following table:


Walk left or right

Climb up / Enter the door / Look up

Climb down / Look down




Activate or stop pogo stick




View status


View main menu




This ver­sion of Commander Keen 9: Battle of the Brains was de­sig­ned for per­so­nal com­pu­ters with o­pe­ra­ting sys­tem MS-DOS (Mi­cro­soft Disk O­pe­ra­ting Sys­tem), which was o­pe­ra­ting sys­tem de­ve­lo­ped by Mi­cro­soft in 1981. It was the most wi­de­ly-used o­pe­ra­ting sys­tem in the first half of the 1990s. MS-DOS was sup­plied with most of the IBM com­pu­ters that pur­cha­sed a li­cen­se from Mi­cro­soft. Af­ter 1995, it was pu­s­hed out by a gra­phi­cal­ly mo­re ad­van­ced sys­tem - Win­dows and its de­ve­lop­ment was ce­a­sed in 2000. At the ti­me of its grea­test fa­me, se­ve­ral thou­sand ga­mes de­sig­ned spe­ci­fi­cal­ly for com­pu­ters with this sys­tem we­re cre­a­ted. To­day, its de­ve­lop­ment is no lon­ger con­ti­nue and for e­mu­la­tion the free DOSBox e­mu­la­tor is most of­ten used. Mo­re in­for­ma­ti­on about MS-DOS operating system can be found here.

Available online emulators:

5 different online emulators are available for Commander Keen 9: Battle of the Brains. These emulators differ not only in the technology they use to emulate old games, but also in support of various game controllers, multiplayer mode, mobile phone touchscreen, emulation speed, absence or presence of embedded ads and in many other parameters. For maximum gaming enjoyment, it's important to choose the right emulator, because on each PC and in different Internet browsers, the individual emulators behave differently. The basic features of each emulator available for this game Commander Keen 9: Battle of the Brains are summarized in the following table:

Emulator Technology Multiplayer Fullscreen Touchscreen Speed JavaScript YES NO NO fast
js-dos JavaScript YES YES NO fast
js-dos 6.22 JavaScript YES YES NO fast
jsDosBox JavaScript YES NO NO slow
jDosBox Java applet YES YES NO fast

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