Steam
UFO ENEMY KNOWN
Also known as UFO ENEMY KNOWN, steam:2883670, uek
Help aliens invade Earth in this procedurally-generated, infinite, 3D shooter game. Fully destructible cityscapes and a wide variety of destruction-wreaking weapons. Visit (rampage and destroy) cities of future Earth and Mars block by block. Chaotic battle scenes as rubble and vehicles pile up.
Last update
22 May 2026
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0
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1
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Browse past updates and patch notes for this game.
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Achievements
Community progression
Top picks from 10 Steam achievements, sorted by player unlock rates.
- Basic Training PassedComplete all parts of the tutorial (no skipping!)62.5%
- Every Great Journey...Successfully complete the first campaign mission53.1%
- E=MC2First use of a nuclear weapon31.2%
- Scorched EarthAll forests on the map turned to ashes31.2%
- Into the Abyss…Complete a unique random mission21.8%
- Royal FavourComplete the Campaign and receive a medal from the princess15.6%