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newvs 24h ago · updates every minute
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93% positive of 43 · Positive · Live from Steam
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Squadron 51 Prologue is free version of Squadron 51. It features 3 levels of entertainment, adding English voiceovers, a never-before-seen boss, and new gadgets for your spaceship to defend Earth from a merciless alien invasion.
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What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 93% on 2026-11-03 → 93% today (43 reviews)
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Not tested by Valve yet. Results from Valve's own testing.
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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.
Small adjustments that make this demo up-to-date with the final version of the game Squad 51 vs. the Flying Saucers (available September 21st)
Small update in some texts Also showing the enhancements selector before restore a checkpoint