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Play Contra: The Alien Wars (SGB Enhanced · US edition · English) Online
Contra - The Alien Wars
Play Contra: The Alien Wars online for Game Boy. Fight an alien invasion in a Game Boy adaptation of the Contra action formula. Weapon pickups change the firing pattern, while enemies and environmental hazards demand constant aiming and movement through a sequence of combat stages.
Browser play
Game Boy (GB) — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Contra: The Alien Wars
Quick start
Press START to begin. Fire while approaching the first enemies, collect weapon capsules and check the space ahead before jumping. Aim toward threats instead of staying still in their line of fire.
Controls
D-pad: move; A: jump in side-view areas; B: fire; START: pause/resume. In overhead areas, hold A to keep aiming while moving. SELECT uses a smart bomb.
Contra: The Alien Wars — About this game
Fight an alien invasion in a Game Boy adaptation of the Contra action formula. Weapon pickups change the firing pattern, while enemies and environmental hazards demand constant aiming and movement through a sequence of combat stages. Enemy placement and gaps make positioning important: advance in short steps, watch attack patterns and choose a clear landing point before jumping. Collect supplies along the route so that mistakes do not leave you unprepared for the next major fight. Press START to begin. Fire while approaching the first enemies, collect weapon capsules and check the space ahead before jumping. Aim toward threats instead of staying still in their line of fire.
Contra: The Alien Wars Game manuals
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · gb
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.