Alien Core

by Core-Ruption Studios

Uncensored Windows Linux Mac Android
Versionv0.0.4c
EngineOthers
Released2025-08-05
Updated2025-08-05
LanguageEnglish

About Alien Core

Alien Core is a 2D stealth adventure by Core-Ruption Studios, presented in animated AI CG art and run on the Others engine. You play a female protagonist who rests under a large tree, then wakes after a bright sky event to find everyone else reduced to mindless drones driven to reproduce. The structure is metroidvania-like: you move between zones, unlock new areas, and avoid capture while dealing with pregnancy and domination themes. Corruption is mentioned as a planned focus rather than a current one.

The current release is v0.0.4c, dated August 5, 2025, and development is ongoing. It runs on Windows, Linux, Mac, and Android, in English, without censorship. The latest changelog entry fixes a camera problem that could occur after Endurance is depleted. Earlier notes also mention a soft-lock fix when moving between areas, a rewritten pregnancy system, and new oviposition content involving Bee and Hugger enemies, plus a fast Horse enemy that requires cover.

Developer's description

Alien Core is a 2D Stealth-Focused game with Impregnation and (not currently but planned) corruption as it's main focus. The game will work similarly to a metroidvania, where you go from zone to zone, unlocking areas as you progress. Story: The player character was just taking a break under a big tree when a bright light spread across the sky. When they come to, they find that they are the only one left with their mind intact, everything else became brainless drones that only look to procreate. Will the MC be able to figure out what happened? Or will they be corrupted along the way?​

Download Alien Core v0.0.4c

Changelog

V0.0.4c - Fixed an issue where the camera got stuck after running out of Endurance V0.0.4b - Fixed major bug that caused the game to soft-lock when traveling between areas V0.0.4 Entirely Re-written Pregnancy Code: This does not effect gameplay directly but it should make any future adjustments to pregnancy far easier to implement (This was kind of necessary for Oviposition). Oviposition!: Two new types of pregnancy has been added, the Bee infests you with maggots, and the Hugger implants you with Eggs (The Egg visuals could be better I admit, have ideas on how to make them look better). For now it is only vaginally, but I will certainly look to the possibility of adding Oral/Anal options in the future. New Enemy Horse!: They run fast if they spot you so make sure you are near cover. Can be found in the last 2 areas. One New Area + 2 Slightly expanded areas: The Alien spaceship where you find the key has gained a small second floor, the previous final zone has been extended with horses, and a new final area that makes use of the new climbing mechanics has been added. Climbing!: The player can go up ladders by holding W or Up arrow. NOTE: since you are likely to skip the tutorial, to climb back down a ladder you need to hold down and press JUMP . This is so the player can still crouch near ladders. Gallery!: A gallery is available on the main menu, I will likely add a unlock condition in the future but for now it will always be accessible. Updated UI during gameplay: I move things around and updated some visuals so everything should be much clearer and nothing should cover anything anymore. BUG FIXES/CHANGES: - Key will be saved upon rest: This was a bit complicated as it needed to be future-proof for all items, I hopefully have achieved that. - Fixed wall in the spaceship - Hopefully fixed a ton of issues with pregnancy, though since I just made the new system there might still be bugs - A lot more stats should be properly saved like last partner and birth count - Probably a lot more but I did a bad time tracking this time round and don't want to waste time recalling all the stuff, let me know current bugs! V0.0.3 Two New Enemies added! There is the Hugger which can hide in the grass making it easy to be surprised. - The other enemy is the Giant Bee, who flies above the player and swoops down slowly making them potentially easy to dodge on their own but tough in a group. One New Area: The entrance is next to the house with the bed and will introduce the concept of different paths to the game. Both the Bee and the Hugger can be found within this new area and while this may be the only place for them now they will be used in more spots as more areas get added. The key has been moved here and so it is required to visit in order to get to the ending. There is a door that requires a keycard, this currently has no way in. Impregnation on sex! If you are ovulating you can now get pregnant right after sex. Twins/Triplets have been added! This includes larger pregnancy stages for when it happens. Pregnancy Options! Adjust the Pregnancy Chance along with the chance for Twins and Triplets within the option menu. You can also switch back to the delayed pregnancy that the game had before. More Thoughts! The text box now has unique dialogue for each enemy upon getting attacked. Limited Corruption has been added! Repeated sex acts will gradually affect characters mental state, this is reflected in the portrait as well as the thoughts they have when having sex with the various enemies. This does not affect generic actions like resting for the time being but will in the future. Ability to Zoom in! You can now cycle through three stages of zoom using the X key, a sign was added in the tutorial as well to explain this. Mini-map item was added! Added where the key used to be, picking this item up will give you a mini-map in the top right corner of the screen which will show how each area is connected (not much more for now) There should also be some bugs that are now fixed but I would not be surprised if new ones show up. Also Android should work on all Androids now hopefully (I can't really test it myself) V0.0.2 New Character Lily! Comes with unique Dialogue and Voice - Visual overhaul of player characters and enemies, with new models for the player characters and all sprites have double the resolution. I really liked how it turned out so I hope everyone else does too. - Android release! This took some learning but it was not as bad as I thought to add touch controls. (Double-Tap arrows to sprint, double tap interact to bring up status, triple tap interact to adjust character portrait) - You can now crouch with the down arrow, silly oversight on my part... - Added audio to birth scene - Pregnancy now is reflected in sprite sex animations (Not the portraits yet, thought about it late and don't want to delay this any longer) - Extended all sex animations, with varied animations throughout - Going back to previous areas now spawns you at the exit instead of back at the beginning of the level. - Bed now restores Endurance and has dialogue associated with it - Added small third area (Was not the focus, want to add new enemies before creating too much extra areas) - Key's are now removed upon use and you can no longer grab multiple before it disappears - Status Screen now updates to the current character portrait - Adjusted Walk and Idle animations to fit better with the new models (less exaggerated) - And a bunch of bug fixes (though I doubt I got them all) v0.0.1b - Fixed the game always crashing when having s** after giving birth - Fixed moving areas after giving birth resulting in another pregnancy - Fixed portrait not always updating after giving birth v0.0.1 Initial Release

Player reviews

Player rating 4.0 / 5 · 7 ratings
Written reviews 7 · avg 3.9★
Positive (4–5★) 71%
Latest review 2025-06-23

What players say

Mostly positive for an early release, with praise for stealth gameplay and adult content, but rough visuals and animations remain.

5★ 2
4★ 3
3★ 1
2★ 1
1★ 0

Players like

  • Stealth gameplay is praised as fun and simple
  • Pregnancy and adult variations are appreciated
  • Difficulty is challenging with useful checkpoints
  • Artwork and character variations are liked

Common complaints

  • Animations and visual polish are rough
  • Adult scenes are too short and repetitive
  • Save and bug issues affect play

Best for players who like stealth-focused adult games with pregnancy themes and tolerate rough early builds.

Summarised from 7 written player reviews.

Arrhenkigen 2025-06-23 ★★★★★
kinda skeptical at first because of the ai cg portrait, but it is good enough gameplay wise, i think it's hard since you have no means of attacking at all overall, quite nice, x-ray scenes could use more polishing though…
dhffasd 2025-05-31 ★★★★★
simple gameplay is nice artwork is good neeed a lot more content the dog sex can be kept to a minimum not really animated during the sex scenes has a lot of potential though I hope a lot of improvements…
JoeTermin 2025-05-22 ★★★★★
Already a great game as of v0.0.2. The jump from 0.0.1 was also very significant with new pregnancy mechanics and a whole 2nd character being introduced in a single update. Pros: + Stealth gameplay is fun and well executed. +…

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