- Updated to the latest version of PI1 - 22 July 2025
Sorry about that! The steam version has been updated to the latest version of Parasite Infection (r1.36) Lots of small bugfixes!
- Part2 hotfix - 23 March 2024
Changed infestable stores requirements for a female from "having a penis less than 10" to "looking like a female and having a vagina"
- Update r1.34 - 3 March 2024
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 parasites. If MC is not equipped with a biosuit there will be a warning in red color about not being able to progress to part 3 Character that wears a merged starfish suit now gestates the parasites at an increased speed rate by 2 Added to the self inspection page in the list of characters met the status of infestation with a biosuit Character with a canal infested vagina now gestates the biosuit in their womb with an increased speed rate by 1 Added mindhack lvl increase possibility if host orgasms to “Induce masturbation” option (The full mindhack event descriptions will be skipped, while increasing mindhack lvl with this option) Now w…
- Update r1.33 - 6 February 2024
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 While in control of the host, approaching and having sex with another NPC while their resist is 30 or more while there are other NPC’s in the room results in a discovery bad event (+10 to busted meter) Added option “Induce masturbation” that can be used while not in control of host. This option advances time, increases host perversion by 5 and if there are other people in the room at the moment of using this option +20 to detection meter from each person. Doing this action when arousal is quite high will increase host’s perversion by 5 more Added option “Increase birth rate” that can be used on any time phase excluding night. This op…
- Update r1.32 - 17 December 2023
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 passages Changed NPC during the day/daytime decision tree Added plotline progression on `during the noon` passages Added doggystyle art image links. Changed doggystyle target requirement from a ‘fuckable anus’ to a ‘fuckable vagina’ Added busted meter that can be seen during the “Night” time phase Added day and day of week display to profile image viewer Added night infestation options that can be accessed in the “Night” time phase Now in the ‘Night’ time phase parasite birthing event occur Added extra descriptors to be more aware of time progression (start and end of ‘During the Day/Night’ events) Added time progression icon at top…
- Update r1.31 - 18 September 2023
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 antari extra infection/infestation to 33% of already infected/infested Upper limit of infected and infested antari were set to 401,680,000 each Malopin, Marcia, Greyce, Dexter, Reginald artwork updated. Still more to add. Simplified infestation process for the green house, added perversion events.
- Update r1.3 - 13 September 2023
Part 4 is now fully beatable, although there are still portions that are unfinished and some missing artwork. All house characters can be obtained. Added notifications of doing the harvesting action in the harem member viewer page Added naked Chloe colored vaginal werm parasites image links Corrected colored breasts starfish infestation image layering for antari and human Added colored parasites image links for breast penetration act Added neck choker, mouth canal, breasts starfish (large and normal) colored parasites image links for Linda Added neck choker, mouth canal colored parasites image links for Nurse and mouth canal, neck choker, breasts starfish, vagina canal colored parasites image links for Chloe in Nurse interaction/visit page Added breast starfish (large and normal), neck choker, vagina canal and mouth canal colored parasites image links for Tracie Added breast starfish, n…
- Update r1.27 - 4 August 2023
Fixed bug occurrences when infesting another person with a biosuit Added the options to transfer/inject biosuits to another character Fixed biosuit wear bug with Amy Added alternate graphical display menus to “MC self inspect” Changed `instant mutations` fluid requirements to 1 Replace text menu of parasite conversion to graphical menu display Added more graphical elements of fluid display Replaced text menu of instant parasite color mutation to alternate menu display "stable" version was set to r1.26
- Update r1.26 - 4 July 2023
Update r1.26 Added alternate instant parasite color mutation menu display Added choker variations images for Steve(male) Added all parasite color variations for Brett Fixed Cyan case mutation error occurrences on “during the night” events. “Mutate into a …” options are not working correctly right now (when not in control of host) Corrected typo in suit incubation description of “watching as parasites merging together” from 10 to 15 Added a default map size value when starting chapter or skipping to a chapter Fixed “Artificial Womb Room” conditions to open it in the Hospital Added a restart button on the Game Over page in case the Restart side menu button does not work Added description to the Canal usage during Large Dark House infestation plot Fixed portrait “...-image” does not exist error messages display occurrences when swapping to another body and being unable to open the “Self in…
- Update r1.24 - 8 May 2023
Added “journal”(located in the cheats page for now). Added journal entries for the main questline. Added ‘Victoria’ image links Colored parasite mutation picker moved lower to the mutation section of “Self inspect” Fixed “Yellow house” pheromones infestation error during infestation quest Added new human participants “fellatio” and “fellatiogive” acts image links. Added new canal parasites image links for human participants Added a “show/hide” button for non-available sex acts. Sex-menu now has a height scrollbar if the menu is longer than the screen height Added a duo-shaft mindfuck sex act Changed “mindfuck” acts requirements from “a penis of any type” to “a natural penis or werm in vagina” Antari with human ass to ass image link addition
- Update r1.23 - 19 March 2023
During first intro scene after kissing Tracie will now be aware that the MC is infested Fixed spelling of `mindfuck` act for male targets Fixed missionary sex canal art layering Now during sex encounter NPC/MC can learn of the opposite side infestation state If the NPC knows that the MC is infested it is now displayed as an additional descriptor in the infestation page of NPC Added additional description inside each sex act to be aware of the cause of arousal changes at the end of the act Unavailable sex acts are now displayed as grayed out options. Hovering over the `` will display the conditions for the option to be available to use. Removed sex act initiation description on sex act start if the initiator is the MC Added new `ass to ass` human version image artwork link MC can now initiate giving option of `Missionary` and `Fellatio` when their resistance is more than 50 Mind meltdown…
- Update r1.22 - 12 February 2023
Attached parasite fluid mutations quantity usage quantities changed (merged - 10, not merged - 20) `home` passages not existing bugfix Audio error fix on `captured` bad end “Preferences” renamed to “Sexual Preferences” and moved below right after “Others” NPC info. `Fellatio` act got a separate action for non-MC characters executing auto-encounter on room enter - MC will be put to do `Fellatio` for them. Current `Fellatio` option renamed to `Perform Fellatio`. On during `missionary` act hidden vaginal parasite exposure is now notified by a prompt Fixed social relations between Chet/Chloe and Quinn so that they don’t have sex on during the night events when player did not visit Quinn before Amy _cont_location fix on brain infestation event Fixed occurrence of not interactable areas around the movable map boxes When npc’s don't accept a parasite, gain additionally +1 to the detection mete…
- Update r1.21 - 3 February 2023
Encounter sex system corrected to work with harem system Now infested NPCs move into the harem Added additional info on mutating parasites with fluids - what mutations will result with inserted fluids Added info on mouseover for stored fluids about parasite mutations with fluids Not stored fluids (those that are inside a body and is not in containers) display changed for easier readability Stored fluids are now available while being in any body During the day `infected unknown` fix Disabled the harmony/dominance infestation due to lack of usage Added random events in Portal Hub. Priest, bureaucrat, politician random event mini plotlines “” text display at end of page on mute audio fix New characters addition to the story code: Marcia, Sapphire, Victoria, Dexter, Reginald. Removed characters from story: Ramellen, Strema, Alpi, Jothran, Sidra, Xelum, Motten, Girt. Added `harem system` rew…
- Update r1.14 - 8 October 2022
Changelog: NPC started sex encounter freeze due to orgasm loop fix House naming on during the night corrections Added NPC’s stats display for the Nurse Preggo belly and aroused werm(with and without canal) images intersection corrections Added Ventilation shaft 2 & Ventilation shaft 3 passages Added small profile pics when choosing a first body to infest as a werm Added coffee machine passage in the hospital Added a stat clamp on stat display of NPC’s (resistance, perversion and arousal will stay within bounds when the stat display is first met in page) Added back old image links of MC antari self infesting mouth with werm Added black market image link & translator image link Changed male PC naked choker layer to be higher than the breast images (to fix the small breasts image overlap the choker image) Added Joan in closet image links (breast, neck & mouth) Added Amy’s room and image li…
- Update r1.13 - 16 September 2022
Changed text structure right after switching to another body Moved starting parasite inventory display position 15 pixels to the left (for the display to be shown fully even if there will be a scroll bar on the side menu) Amount of pheromones released during the action of “Release pheromones” increased by x3 than before Added Incubator image link for the Medical bay in Key Saychu Station Added map scaler to the settings menu & removed map empty space movable parts
- Update r1.12 - 23 August 2022
Help menu has been moved to the Cheats menu tab Added mall map Added perversion/resistance/arousal stats display to character infestation screen Added new house map images Added doggystyle and scissors acts Fixed most of the spelling issues (ex: saies, you’s and etc) Added DataPad & FlightComputer image links Removed borind orgasm and preference increase messages Hand breastfuck condition corrected to how it was supposed to be (if hand werm into breasts) Surgery room (at table) image link addition Numbers of stat changes are now concealed as tooltip mesages Added choker jar art to the choker jar pick up in the science lab (spaceship part) Cheats moved to side menu Fixed Joan image linking to part 1 room from other parts
- Parts 4 & 5 addition - 15 April 2022
Added parts 4 & 5. But these are not as finished/polished as parts 1-3
- r1.10 bugfix - 15 April 2022
Fixed `Continue` button after infesting NPC’s necks with a werm
- Stable version - 31 March 2022
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 -> stable".
- r1.10 hotfix - 25 March 2022
Part 3 Genetics laboratory options error hotfix
