๐ŸŽฎ Play Altered Beast (USA, Europe) Online (Sega Master System)

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Altered Beast (USA, Europe) cover art
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๐Ÿ•น๏ธ 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

๐Ÿ’ก Tip: You can also connect any USB / Bluetooth Gamepad controller!

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๐ŸŽฎ 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 / Steeringโ–ฒ โ–ผ โ—„ โ–บ
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: ๐Ÿ‘๏ธ 143 plays
Altered Beast (USA, Europe)
box cover
Game title:Altered Beast (USA, Europe)
Platform:Sega Master System
Emulator Core:SEGAMS
Game Manual: ๐Ÿ“– Official Manual (Built-in)
Share Game:
License:Freeware / Abandonware
Available online emulators for Altered Beast (USA, Europe):

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

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

Altered Beast is a side-scrolling beat-’em-up released by Sega for the Sega Master System in 1989. You play as a resurrected centurion tasked by Zeus to rescue his daughter, Athena, from the demon god Neff in the Underworld. As you battle through undead hordes, you can collect Spirit Balls to increase your strength and ultimately transform into powerful mythical creatures like a werewolf or a weredragon.

How to Play

Fight your way to the end of each stage to confront Neff and his minions. Use the arrow keys to move, Z to punch, and X to kick; press both buttons simultaneously to jump. Enter acts as Start. Defeat the glowing two-headed wolves to collect Spirit Ballsโ€”you need three per stage to unlock your beast transformation and force the boss battle.

Tips

  • Your kick attack generally has better range than your punch, making it safer for keeping approaching enemies at a distance.
  • Neff will appear multiple times throughout the stage, but he will only transform into the level boss if you have collected three Spirit Balls. If you miss one, he will flee and the stage will loop.
  • Once transformed, your attacks change completely depending on the beast form. Take a moment to learn your new projectiles and dash attacks.
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