🎮 Play Commander Keen 9: Battle of the Brains Online (DOS)

Name: Commander Keen 9: Battle of the Brains
Availability: InStock
Author: Ceilick

Commander Keen 9: Battle of the Brains cover art

🕹️ GAME CONTROLS

Action / Button	Keyboard Key
D-Pad (Up / Down / Left / Right)	`Arrow Keys`
Button A	`Z` or `J`
Button B	`X` or `K`
Button X / Turbo A	`A` or `U`
Button Y / Turbo B	`S` or `I`
Select	`Shift`
Start	`Enter`

💡 Tip: You can also connect any USB / Bluetooth Gamepad controller!

Game Rating & Player Reviews: ⭐ Not rated yet

🎮 VISUAL CONTROLLER MAPPING & GAMEPAD DIAGRAM Auto-Detect: Active

Gamepad Input	Retro Function	Keyboard Key
D-Pad / Analog	Character Movement / Steering	`▲` `▼` `◄` `►`
Button A (East)	Primary Action / Attack / Fire	`Z` / `K`
Button B (South)	Secondary / Jump / Cancel	`X` / `J`
Button X / Y	Special / Turbo / Extra Fire	`A` / `S`
Select	Insert Coin / Select Option	`Right Shift`
Start	Game Start / Pause Game	`Enter`

Game info: 👁️ 132 plays

box cover

Game title:	Commander Keen 9: Battle of the Brains
Platform:	DOS
Author (released):	Ceilick (2011)
Genre:	Action, Platform
Mode:	Single-player
Game size:	1100 kB
Emulator Core:	DOS
Game Manual:	📖 Official Manual (Built-in)
Share Game:
License:	Freeware / Abandonware

Available online emulators for Commander Keen 9: Battle of the Brains:

Different online emulators are available for Commander Keen 9: Battle of the Brains. Select an emulator core below for optimal performance:

Emulator Core Engine	Technology	Multiplayer	Gamepad	Touch	Ads	Action / Switch
EmulatorJS (Default WebAssembly)	`WebAssembly / JS`	YES	YES	YES	NO	▶ ACTIVE
MS-DOS (Recommended)	`WebAssembly / Libretro`	YES	YES	YES	NO	PLAY ⚡
JS-DOS v3.0 / DOSBox Engine	`Emscripten C++`	YES	YES	NO	NO	PLAY ⚡

Game description:

Commander Keen 9: Battle of the Brains is an unofficial, fan-made DOS action-platformer released by Ceilick in 2011. Playable directly in your browser, this community creation captures the authentic jumping and pogo mechanics of the original 90s PC series.

How to play

The game is controlled using standard MS-DOS keyboard inputs. Navigate the levels using the arrow keys, and typically use Ctrl, Alt, and Space for jumping and action. For the best experience in the browser emulator, press Right Alt + Enter to toggle full screen mode.

Screenshots:

Commander Keen 9: Battle of the Brains Screenshot

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Player Comments & Discussion: 0 Comments

🎮 GAMEPLAY OBJECTIVES & HOW TO PLAY

Objective: Complete levels, defeat enemies, solve puzzles, and beat the final boss.
Starting Game: Click the emulator screen above or press Space / Enter to launch.
Saving Progress: Use the built-in emulator save state hotkeys or auto-save feature.
Full Screen: Press Alt + Enter or click the fullscreen icon on the toolbar.

💡 PRO TIPS & TROUBLESHOOTING

Lag / Stutter: Ensure hardware acceleration is enabled in your browser settings.
Audio Mute: Click inside the game screen to activate WebAudio sound synthesis.
Multiplayer: Connect two USB controllers or use WASD (P2) + Arrow Keys (P1).

Frequently asked questions about Commander Keen 9: Battle of the Brains

Who made Commander Keen 9: Battle of the Brains?

Commander Keen 9: Battle of the Brains was published by Ceilick, released in 2011.

What kind of game is Commander Keen 9: Battle of the Brains?

Commander Keen 9: Battle of the Brains is a action, platform game for the MS-DOS.

Can two people play Commander Keen 9: Battle of the Brains?

No. Commander Keen 9: Battle of the Brains is a single-player game, so it has no two-player mode.

How much data does Commander Keen 9: Battle of the Brains load?

The Commander Keen 9: Battle of the Brains ROM is 1100 kB. It is fetched once when you press play and then cached by your browser, so returning to the game does not download it again.

Move / D-Pad:	`▲` `▼` `◄` `►`
Fire / Action (A):	`X` or `K`
Jump / Special (B):	`Z` or `J`
Start / Select:	`Enter` / `Shift`

Move / WASD:	`W` `S` `A` `D`
Fire / Action (A):	`B` or `I`
Jump / Special (B):	`V` or `U`
Start / Select:	`T` / `R`

🎮 Play Commander Keen 9: Battle of the Brains Online (DOS)

🕹️ GAME CONTROLS

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