Screenshots
Watch trailer on Steam ↗Experiment 404
Lost Input Game · Published by Lost Input Game
Content notice: Experiment 404 includes some violence to enhance the fear and tension, fitting the genre's dark atmosphere. While there are graphic elements, they’re used purposefully to build suspense and are not excessive.
Last updated 28 Sept 2026
Room 404 repeats. Identify anomalies, file reports, and stay alive—some anomalies might hurt you. Nurture the plants, listen to the overlord, end the loop, and unlock multiple unique endings.
Adventure, Indie · More free games
Explore a mysterious loop where every room holds new challenges. Identify anomalies to stay alive and uncover multiple endings as you nurture plants and listen to the overlord’s guidance.
About this game
6 unique endings
More than 40 anomalies
You are a botanist participating in Experiment 404, your goal is to complete 12 sessions and report any unusual activities. Pay close attention to your surroundings and stay alert, or the looming overlord might decide to end the experiment early.
Gameplay
Anomalies may appear in Room 404. Spot them. Report them. Fail—and the chamber will punish you in ways most unnatural.
Remove weeds from the plants and dispose of them properly to satisfy the looming overlord watching your every move through the cameras.
Replayability
No two playthroughs are the same. Experiment 404 branches into 6 different endings, each shaped by your accuracy in spotting anomalies and the choices you make under pressure. Every action is logged by the unseen observer, deciding whether you earn freedom, revelation… or something far, far worse.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10/11 34 bits
- Processor: Intel® Core i5-8400
- Memory: 8 GB RAM
- Graphics: Direct X 11.0 compatible video card with 3GB VRAM
- DirectX: Version 11
- Storage: 3 GB available space
Recommended
- OS: Windows 10/11 64 bits
- Processor: Intel® Core i5-8400
- Memory: 16 GB RAM
- Graphics: Direct X 12.0 compatible video card with 6GB VRAM
- DirectX: Version 12
- Storage: 3 GB available space
Supported Languages
*languages with full audio support
