Changes log:
Added male start (initial & WIP; grammar corrected & somewhat changed from female start)
Fixed game crash occurrence while ‘Mute’ music is on on game restarts

Steam news
Full Steam announcements and update articles for this title.
Added male start (initial & WIP; grammar corrected & somewhat changed from female start)
Fixed game crash occurrence while ‘Mute’ music is on on game restarts
Fixed window sizes dropdown display in settings. Fixed window dropdown options from disappearing on game reset
\ Fixed game crash occurence on initiating game reset
\ Added bottom button clicks delay if parasite form infestation event is available
\ Removed ‘penis’ bodypart on start for Sierra
\ Added radial glow effect for main characters skill in ‘Characters’ page
\ Masturbation image now blurs/fades in and out for sierra apartment masturbation
\ Button bar on the bottom fades to slow down speed of game based off of what you did w/
delaying the night time button presses, it speeds up when your energy is higher. 0.25 second min delay
2 second max delay
\ Fixed a lot of sound transitions in the Orion section
\ Altered color of the skill stat, changed to integer, simplified skill gain to 1 skill point per
masturbation event
\ Reduced arousal increase from 15 to 5 to slow down masturbation events, increased
consequences of each masturbation event
\ Arousal now increases based on infestation w/ other parasites as well
\ Homosexual staring scenes now locked behind homonode in skill tree
\ Homosexual scenes don't occur if another scene is already occurring
\ Created game over screen for mind loss
\ Altered the skill tree to combine all skills into the character menu
\ Skill nodes depress on mouse down
\ Created a new side character - Sierra’s Mom Cassandra
Fixed background color on buttons on the bottom nav menu
\ Added event passage for Sierra getting to 100 homosexuality
\ Added “Release Pheromone” ability
Fixed double loading of passages to cut down on game initialization
Fixed crash from sound mechanism interaction w/ game reset
About
This page aggregates Steam news feeds, patch notes, and developer announcements for Parasite Infection 2, sourced from official Steam community posts.
Major updates, balance changes, and seasonal events often correlate with player-count spikes — cross-reference announcements here with the live charts on the main Parasite Infection 2 statistics page.
Articles link back to Steam for full changelogs. SteamScope refreshes news entries as new posts are published to the game's Steam hub.
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Browse related Steam game intelligence pages and categories.
\ Added canal infestation for Sierra
\ Added ‘Character’ button in sidebar
Added character skills panel mech - can be opened from the ‘Characters’ page. Added Sierra skills window
Parts ‘corruption’ added. Parts corruption progress can be viewed in the ‘Characters’ page. Character orgasms now trigger parts corruption. Parasites gestate faster by 20% (multiplicative)
Added hide/unhide buttons for side menu
Added Sierra profile image
Fixed ‘Characters’ option in Main Menu from hiding in Orion part
Applied inline text additions for orion parasite form interactions
Fixed bold font not applying in some scenes
Parasite form incubation menu alterations
Added Detection bar on Orion
Anus infest with werm on Orion
Added Sierra infestation and expanded general gameplay on Orion
Fixed occurrences of sound playback starting while game is in mute mode
Added artwork for maxine mindfuck scene
Backend refactor for outdated passages text usage that was present across the entire game in nearly every single passage
Added Cidnee Characters profile. Cidnee appears after visiting ‘Ideation hall’ location
Added Eriko Characters profile
Added parasite birth cycles to Orion
Changed the Earth part ‘Finale’ event requirements to additionally require a werm in neck infestation of main character
Fixed gamecrash situation caused by missing a ‘Settings’ config file
Added parasite form skills (initial version)
Added alternate time display in save slots
Increased save slots amount to 10
Added save slot numbers
Fixed several occurrences where upon loading a save the already existing data was ignored if save file did not contain the data that was needed to get removed
Added Parasite Form actions (initial version)
Added ‘On hover’ and ‘On click’ animations to ‘Plotlines’ event boxes
Fixed Michelle profile artwork
Inserted several plotlines into the Orion section - still under construction
Adjusted ‘Finale’ passage conditions for ‘not infested enough’ case if neck infested by any colored werms other than cyan to now approve all colored werms
Fixed game crash situation caused by checking for choker eggs during parasite birth
Added Plotlines page side display - Vignette’s. Adjusted Plotlines to work alongside with Vignettes. Added new entries to Plotlines view. Vignette’s are saved every ‘morning’
Fixed mindfucked by Quinn passage conditions for the event to appear
Added artwork for Out of Order Quinn passage
Michelle’s birthing queen passage updated
Infestation of locations on Earth is twice as slow now
Updated an image in Michelle’s training passage
Added artwork for Darryl’s “game over woman” passage
Updated Diana’s artwork for Confidence passage
Updated Diana’s white choker parasite artwork in the unique passage
Added new variables to check starting_as/transitioned_to female states (old save files might not work or even cause game crashes)
Choker infestation passages for Rakko, Miron, Sierra, Eriko, Cidnee
Fixed Infested Mall and University work to be counted towards White Werm conversion event
Changed White Werm conversion event - requirement of 2 werms infesting Savannah has been changed to being infested by at least 1 werm and having 1 werm in inventory
Added plot transition to Orion
Added Map UI. Visible once map changes to ‘Orion’. Resize by press&dragging on ‘+’ UI button. Maximize/minimize by pressing ‘_’ on UI or ‘M’ keyboard buttons. Drag while pressing on Map UI top bar.
Fixed error with Sherryl’s werm brain infestation scene
Animated Side Info text on stat/currency changes
Animated bottom buttons on mouse click and QWA button presses
Added most of the currently added unique sex events for Cheat menu’s ‘Plotlines’
Changed Cheat menu’s ‘Plotlines’ to display alternate plotlines. Not visited passages are now displayed as ‘Undiscovered’
Improved Darryl’s blue parasite pathway
Changed Cheat menu’s ‘Plotlines’ display - first pick a character, then check plot variations
Changed Cheat menu’s ‘Plotlines’ connection lines connection behavior and position display to be more comfortable to view
Fixed passage scrolling by using ‘Up’ and ‘Down’ buttons
Added some passages for Kiara being infested by red parasites
Added a short placeholder passage for Sherryl after she gets werm-brain infested
Added artwork for workaholic passage (white parasites) in Savannah
Added artwork for Michael’s female unlock passage
Added artwork for Diana’s mindfuck scene of Savannah
Added increases breast size by 1 each day of gestating eggs up to a specific size (B cup max)
Added artwork to Darryl’s crossing over passage
Fixed insemination events at the coffee/university/shopping mall areas
Updated artwork for infested university
Fixed Diana’s eye color in her lingerie passage
Updated sounds for many, many passages
Added a new music track
Added bad end for Diana if she is infested by white starfish in her chest
Added passage about love if Savannah is vaginally infested by a purple canal
Added ‘Continue’ button for Sex Menu. Picked partner persists for ‘Random sex act’
Fixed situation where bottom passage buttons were ‘squashed’ if there was an interaction with a in-passage parasite dropbox area
Fixed display priority for Cheat Menus ‘Plotlines’
Added ‘Pacified’ status display in ‘Characters’ tab (mindbroken or neck choker infested)
Changed button in Sex Menu after picking a parter ‘Cancel’->’Change Partner’
Removed tab intervals in Sex Menu
Removed empty space between sex acts buttons and auto-pick sex act container when picking a sex acts partner
Additional note: A reminder that there is a standing request for any artist that can draw at roughly the level of artwork currently in the game. DM for more details on patreon, discord, or itch.io if you are able :)
Changelog:
Fixed issue in Infestation display (Characters tab) where parasite slots were displayed even if their required conditions to be displayed were skipped
Added ‘cock’ bodypart to the list of fluid interactions and parasite mutations from insemination
Fixed issue where fluids would not be registered in orifices after insemination
Updated passage for Michael blue canal
Added passage after infesting Michael with blue werm
Updated Kiara’s artwork for mindfucking Savannah
Fixed Michelle’s blue starfish infestation passage
Added artwork for michelle’s blue anal canal infestation
Added another scene for Michelle after she gets blue canals + permanent pregnancy
Added to Diana’s mall underwear scene
Added to Diana’s tv masturbation scene
Changed some inventory UI textures
Corrected passages content edges display margins
Added passages bottom buttons alternate interactions with keyboard buttons (Q,W,A,S)
Changed passages bottom panel buttons
Added event and parasite infestation checkers to plotlines cheatpage
Started building the Antari homeworld (Orion) and characters (not accessible in game yet):
Sierra - Athletic and confident citizen hanging out at the Bar
Mehan - Antari military high ranking officer always visiting the Capitol
Rimon - Mehan’s son, manages the local high security Portal Hub that controls traffic to the rest of the Antari empire
Eriko - Nihilistic socialite building her network of power at the Political HQ
Cidnee - Idiot nepo baby working as a scientist in the Ideation Hall
Re-imported parasite mutations white and purple buttons
Added a sex passage for Diana’s blue starfish infestation
Added initial plotlines guides cheatpages to the Cheat Menu
Updated all location triggers to get infested twice as fast (coffee, work at mall, etc)
Fixed a couple of profile artwork pieces for Savannah
Fixed conditions for Darryl’s heimlich passage