Parasite Infection
Released Sep 2021
Erotic text-based adventure of blue alien women, parasites, and spaceships.
76% positive · 144 reviews
Not yet
Released, but still in active development
Medium confidence
Active Development
Not yet
Released, but still in active development
Medium confidence
Active Development
Where to buy
Steam $7.99
Can't confirm — worth a look
We couldn't confirm these stores carry this game.
Green Man Gaming Steam key Search IndieGala Steam key Search Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site
Evaluation
Parasite Infection launched on September 1, 2021 and has been continuously updated since. The game began with Parts 1–3, then expanded with Parts 4 & 5 in April 2022. Part 4 reached a fully completable state in the September 2023 update (r1.3), followed by several feature patches through early 2024 that added new mechanics, artwork, and content to multiple parts of the game. The most recent developer communication was a bug fix update (r1.36) posted on July 22, 2025.
The store description explicitly states that "part 4+ are under construction," and a February 2022 developer post announced plans for a sequel (Parasite Infection 2 on Unity) while stating that Parasite Infection 1 needs to be finished first. The developer has not made any statement indicating that development of the current game is complete.
Looking at the update cadence: three major content releases occurred between September 2021 and September 2023 (roughly every 6–12 months), followed by several feature patches through March 2024. The last substantive developer communication was the July 22, 2025 bug fix. As of October 1, 2026, there has been no developer communication of any kind since July 22, 2025 — over 14 months of silence. This is beyond the historical cadence window.
However, the February 2022 development status post established an outstanding commitment: finishing Parasite Infection 1 before moving to the sequel. The store description still references parts under construction. Because outstanding commitments were stated and the developer has now gone silent beyond the cadence threshold, this edges toward uncertain — but the sustained update history and the fact that a bug fix as recently as July 2025 shows the developer was still engaged keeps this as active development rather than development uncertain. The silence is notable but not yet far enough beyond the threshold to flip to a risk signal, given the irregular (sometimes multi-month) gaps already observed in the update history.
Evidence
Update r1.3: Part 4 is now fully beatable, though some portions remain unfinished and some artwork is missing.
Parts 4 & 5 added, noted as not as finished or polished as parts 1–3.
Details
Developer
Publisher
Light Dark Deviant
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Not rated
Players
Single-player
About this game
You are Chet, an average person working in a mundane job. One day you are accidentally abducted onto an alien ship as part of their bio-weapon science experiment. Explore and discover what is going on - escape if you can! Or maybe you won't want to. The vessel is filled with parasites capable of merging with and altering the body in various ways.
Why are we putting this on steam:
1) It's just really cool to have a game on steam
2) The game is expanding with fan-made versions on rpgmaker, ren'py, and fan-made language localizations. Publishing on steam feels like a natural next step.
3) It is a good game development and publishing experience for the resident coder, who wants to get more into game development. Steam's rigorous submission process actually forces a lot of good generalized practices for game publishing in terms of asset management.
Parasite Infection has been evolving from a pure text-based choose your own adventure story into a fairly complex game involving mind control, body modification, gender fluidity, and unique sex acts which are physically impossible under normal circumstances. The art started as stick figure hand drawn abominations (by me) and has turned into the amazing artwork you see in the screenshots (by ModeSeven). Player feedback and ideas have helped to push the game forward. There are some truly out of this world sex situations in this game which I wouldn't have thought up if it wasn't for communication with the fans.
As per user feedback, we have just updated the game with parts 2+3. If you want to venture offroad, you can find larger versions of the game around the web. However, part 4+ are under construction and will not work very well (if you find versions w/ them on the deepweb somewhere)
Some people have said this game is addictive. If you feel you are playing it too much, please take a break and go outside. Parasite Infection started as a way of sharing an erotic fantasy, and that's still the primary goal. I don't need your money that badly (although it does help - the artwork was only possible once I monetized the project). Games should be about fun, not entrapment. Yes I know how ironic it is that I'm saying this about a game literally designed around mind control, but it's what I believe.
Finally - if you choose to buy this game, thank you for your support. I will be monitoring feedback and improving the game based on reviews and discussion.
Why are we putting this on steam:
1) It's just really cool to have a game on steam
2) The game is expanding with fan-made versions on rpgmaker, ren'py, and fan-made language localizations. Publishing on steam feels like a natural next step.
3) It is a good game development and publishing experience for the resident coder, who wants to get more into game development. Steam's rigorous submission process actually forces a lot of good generalized practices for game publishing in terms of asset management.
Parasite Infection has been evolving from a pure text-based choose your own adventure story into a fairly complex game involving mind control, body modification, gender fluidity, and unique sex acts which are physically impossible under normal circumstances. The art started as stick figure hand drawn abominations (by me) and has turned into the amazing artwork you see in the screenshots (by ModeSeven). Player feedback and ideas have helped to push the game forward. There are some truly out of this world sex situations in this game which I wouldn't have thought up if it wasn't for communication with the fans.
As per user feedback, we have just updated the game with parts 2+3. If you want to venture offroad, you can find larger versions of the game around the web. However, part 4+ are under construction and will not work very well (if you find versions w/ them on the deepweb somewhere)
Some people have said this game is addictive. If you feel you are playing it too much, please take a break and go outside. Parasite Infection started as a way of sharing an erotic fantasy, and that's still the primary goal. I don't need your money that badly (although it does help - the artwork was only possible once I monetized the project). Games should be about fun, not entrapment. Yes I know how ironic it is that I'm saying this about a game literally designed around mind control, but it's what I believe.
Finally - if you choose to buy this game, thank you for your support. I will be monitoring feedback and improving the game based on reviews and discussion.
Are these done yet?
Last evaluated Oct 1, 2026
Something about this evaluation looks wrong Report illegal or harmful content