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Alien Invasyndrome is an indie alien-themed stealth and action game currently in development by the Japanese developer (also known as 百舌鳥). While the game is frequently searched for as a "free download," it is primarily distributed through the developer's official channels and demo releases. Game Overview & Mechanics

What is Alien Invasyndrome?

: Survival and reproduction of the species in the new environment. : Rapid colonization and expansion into native habitats.

Performance & Stability