Last 7 days
Screenshots, achievements, specs, every price change and sale we've seen on Steam, and trading cards.
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Steam prices for United States (change the country in the top bar), and Steam keys from authorized stores.
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76% positive of 141 · Mostly Positive · Live from Steam
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Erotic text-based adventure of blue alien women, parasites, and spaceships.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 76% on 2026-11-01 → 76% today (141 reviews)
No authorized Steam key store lists this game right now.
Not tested by Valve yet. Results from Valve's own testing.
Valve hasn't published test details for this game.
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.
Sorry about that! The steam version has been updated to the latest version of Parasite Infection (r1.36) Lots of small bugfixes!
Changed infestable stores requirements for a female from "having a penis less than 10" to "looking like a female and having a vagina"
Additions & changes: Bridged the transitioning of picked host with infested parasites to be usable in part 4 from part 3 Added a small description for those who stuck and want to progress from part 4 to 5 Added transition with biosuits and other infested paras…
Additions & changes: Added part picker to the title screen directly Added option during night phase “Masturbate close to someone” that can be used if host has a parasite in vagina or penis. The infestation has a 15% to occur on a randomly picked NPC in room Wh…
Space button can now be used to progress through most passages ←, ↑, ↓, → button image directions can now be used by pressing the corresponding keyboard buttons Now “Map” can be closed by pressing the “M” key Moved “Get outside of current host” lower on the pa…
Fixed incorrect starfish breasts display on naked Chloe when breasts size less than 25 Fixed chapter transition error to the 5th from 4th Corrected addition of Malopin to the harem to be converted to female right before the addition Corrected over the night an…
Added parts 4 & 5. But these are not as finished/polished as parts 1-3
Added a stable subversion that can be switched into in case the fresh release is too buggy. The current one at the time of publication is r1.09. To switch to a stable version: "Game properties -> Betas -> Select the beta that you would like to opt into -> stab…