Play Alien Syndrome (USA, Europe) Online
Dodge alien swarms in tight corridors, picking your shots carefully—upgrades are scarce, and those 80s SEGA creature designs get weirder the deeper you go. Grab a friend if you want backup; things get messy fast.
Alien Syndrome came out for the Sega Master System in 1987, published by Sega. It was part of that wave of sci-fi action games that felt right at home on the system, offering a top-down shooter experience that stood out among the platformers and arcade ports of the time.
You control a space marine tasked with rescuing hostages from a labyrinthine alien-infested ship. You move screen by screen, clearing each area of enemies before progressing. The key mechanics include collecting weapon upgrades, managing limited ammo, and navigating maze-like levels under a strict time limit. The pacing is relentless; enemies spawn constantly, and the timer adds real pressure. It feels tense and chaotic, demanding quick reflexes and careful movement through every hostile corridor.
Download Alien Syndrome (USA, Europe) ROM
You can download this ROM to play Alien Syndrome (USA, Europe) offline using an Sega master system emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.
