Alien Storm is a 1990 sci-fi arcade beat ’em up developed by Sega. Players join the “Alien Busters” to save Earth from a grotesque extraterrestrial invasion, battling mutants across city streets, inside buildings, and through first-person shooting gallery segments.
How to Play
Your objective is to defeat the alien forces and clear each stage. To play in the browser, press 5 to insert a coin and 1 to start. Use the Arrow Keys to move, and use Z, X, C (or Ctrl, Alt, Space) to attack, roll, and unleash your screen-clearing special energy weapon.
Tips
- Energy is shared between your main gun and special attack, so collect energy packs frequently.
- Do not deplete your energy entirely, or your basic attacks will be reduced to a very weak melee strike.
- During the fast-paced running segments, prioritize jumping over obstacles and shooting enemies ahead of you to preserve health.

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