Check-In Protocol
A downloadable game
✦
Check In Protocol is a fast-paced, atmospheric zombie shooter set inside a hotel where something has gone terribly wrong.
The lights flicker. Then they fail.
What remains are shadows, distant sounds, and the faint glow of emergency lights cutting through blood-stained halls. Every step forward pulls you deeper into a space that feels alive, watching, waiting.
The rules are simple, but unforgiving. Stay accurate, and your power grows. Lose your rhythm, and it slips away. Time your actions carefully, read the signals around you, and strike at the right moment to unleash devastating force against the swarm.
But something else lingers in the dark.
A voice that reacts. That listens. That mocks.
You are not just fighting to survive the hotel… you are part of it now.
✦
This project was developed in Unreal Engine as a learning experience, focused on gameplay systems, atmosphere, lighting, and reactive audio design. It is an ongoing exploration of how mechanics and immersion can work together to create tension and engagement.
| Status | Released |
| Author | Carlos Sulbaran |
| Genre | Shooter |
| AI Disclosure | AI Assisted, Graphics, Sounds |
Download
Install instructions
Unzip the file and run CheckInProtocol.exe.
If the game runs slow, it is probably your Antivirus. Close the game, open it again, and it should be fixed!



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