Default Controls
← → ↑ ↓ = Directions
A = Z
B = X
Mode = Right Shift
Start = Enter
About the Global Defense (USA, Europe) (Beta) SEGA Master System (PSX) Online Game
Hey there! Welcome to Global Defense (USA, Europe) (Beta)! Get ready to defend the Earth from alien invaders in this classic SEGA Master System game. Play online in your browser for free without any downloads. Just click the link, and start blasting away at enemy ships to save the world. Enjoy the nostalgia of retro gaming with this action-packed shooter. Are you ready to take on the challenge and become the ultimate defender of our planet? Let’s go!