Default Controls
← → ↑ ↓ = Directions
A = Z
B = X
Mode = Right Shift
Start = Enter
About the Altered Beast (USA, Europe) SEGA Master System (PSX) Online Game
Hey! Ready to transform into a powerful beast and fight evil forces? Play “Altered Beast” on SEGA Master System online for free in your browser. No downloads needed! Experience the classic side-scrolling action game where you battle through hordes of enemies and bosses to save the world. Simply click the play button and unleash your inner beast to conquer the challenges ahead. Let’s see if you have what it takes to become the ultimate warrior in this retro gaming adventure. Enjoy the nostalgia and have fun!