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newvs 24h ago · updates every minute
Last 7 days
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40% positive of 25 · Mixed · Live from Steam
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"Theory" is an intense first-person shooter (FPS) game set in a post-apocalyptic world overrun by hordes of ravenous zombies. Players find themselves in a vast, desolate landscape. As a survivor, you'll navigate through various environments.
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No authorized Steam key store lists this game right now.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 40% on 2026-11-01 → 40% today (25 reviews)
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Games we track that share the most Steam tags with this one.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Does not work on Steam Deck. Results from Valve's own testing.