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Alien Syndrome (USA, Europe) cover art
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🕹️ GAME CONTROLS

Action / ButtonKeyboard Key
D-Pad (Up / Down / Left / Right)Arrow Keys
Button AZ or J
Button BX or K
Button X / Turbo AA or U
Button Y / Turbo BS or I
SelectShift
StartEnter

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

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🎮 VISUAL CONTROLLER MAPPING & GAMEPAD DIAGRAM Auto-Detect: Active
L1 / LB R1 / RB SELECT START Y X A B RETRO ARCADE
Gamepad InputRetro FunctionKeyboard Key
D-Pad / AnalogCharacter Movement / Steering▲ ▼ ◄ ►
Button A (East)Primary Action / Attack / FireZ / K
Button B (South)Secondary / Jump / CancelX / J
Button X / YSpecial / Turbo / Extra FireA / S
SelectInsert Coin / Select OptionRight Shift
StartGame Start / Pause GameEnter
Game info: 👁️ 87 plays
Alien Syndrome (USA, Europe)
box cover
Game title:Alien Syndrome (USA, Europe)
Platform:Sega Master System
Author (released): Unknown (1987)
Emulator Core:SEGAMS
Game Manual: 📖 Official Manual (Built-in)
Share Game:
License:Freeware / Abandonware
Available online emulators for Alien Syndrome (USA, Europe):

Different online emulators are available for Alien Syndrome (USA, Europe). Select an emulator core below for optimal performance:

Emulator Core EngineTechnologyMultiplayerGamepadTouchAdsAction / Switch
EmulatorJS (Default WebAssembly) WebAssembly / JSYESYES YESNO ▶ ACTIVE
Sega Master System (Recommended) WebAssembly / LibretroYESYES YESNO PLAY ⚡
SMS Plus GX WebAssembly / LibretroYESYES YESNO PLAY ⚡
Game description:

Alien Syndrome is a cooperative top down shooter with aliens developed by SEGA as an Arcade game in 1987.

About Alien Syndrome (USA, Europe)

Get ready for a blast from the past with **Alien Syndrome (USA, Europe)**. Hailing from 1987 on the Sega Master System, this classic retro hit showcases the best of what its original developers had to offer.

Dive deep into the engaging mechanics of this classic retro masterpiece. The Sega Master System era was known for its challenging yet rewarding gameplay, and Alien Syndrome (USA, Europe) delivers exactly that.

What are you waiting for? Press Start to play Alien Syndrome (USA, Europe) online now! Don't forget to bookmark this page and check out more amazing classic retro games in our Sega Master System section.

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