Alien Invasyndrome
Game Information
Developer
mozu field / 百舌鳥 /Version
vDemo - 1.0 hotfix
Engine
Others
Release Date
May 5, 2026
Last Update
May 6, 2026
Censorship
Uncensored
Overview
Alien Invasyndrome is a 2D RPG for players who want body-horror monster invasion themes with a slow-power-growth structure. The tone stays tense and predatory rather than playful.
Story
An exploration vessel crewed by women drifts through deep space, searching for a way to preserve humanity's future. Unknown to them, an alien has stowed away, driven by the same need to save its own bloodline. Posing as one of the crowd, it begins converting the ship's inhabitants into hosts for its survival, turning the mission into something far more dangerous than anyone aboard realizes.
Gameplay
You play as the alien itself, starting weak and reliant on stealth to avoid detection while you sabotage the ship from within. Exploration unfolds across a sandbox-style map divided into distinct areas, with puzzle elements gating progress and RPG battles marking key confrontations, including boss fights that open the way to new sections. As you grow stronger, direct confrontation and domination become viable alongside stealth, shifting the balance of power on the ship in your favor.
Features
- Mind control mechanics tied to converting crew members into extensions of the alien's spread
- Animated 2D scenes with internal-view detail
- A pause menu offering language selection and BGM adjustment during play
Installation
1. Extract and run.
Changelog
v0.99
- ・Added an event to move from the current area to the next area after boss battles.
- ・The kitchen area had numerous bugs that became difficult to fix, so it was completely removed and rebuilt.
- ・Implemented a pause button, allowing you to change language, adjust BGM volume, quit the game, or return to the title screen during gameplay.
- ※Save data loading is still unimplemented, so you cannot resume from where you left off after pausing.
- ・You can now attack enemies caught in traps.
- ・For this version only, the Trap skill is set to MAX from the start. Once bugs are nearly eliminated in this version, the demo will be complete. Future plans include implementing lower-level areas and creating the official title screen. After the demo is complete, we will prepare to announce it on the planned game sales site. Thank you for your continued support.
v0.97
- ・Charge Attack is now unavailable when the game starts
- ・Added event for acquiring the Charge Attack (By accessing the nest)
- ・Added Skill Tree menu for learning skills
- ※You may see a bug that says you can learn it again after the first time, ignore it cause it is WIP.
- ・Added event after boss fight (with sex animation)
- ・Now you may release hypnotized NPCs. Open the command list (C key) to select that function while you have someone hypnotized.
- ・The command list is now moved from B key (X on keyboard) to C key (C on keyboard).
