Clusterfall

Clusterfall is a hidden-role multiplayer game in which players act as LLM agents working to stabilize a cascading prompt graph before the cluster collapses. Most players try to keep the system running, while one secretly plays the Hallucinator and works to corrupt it. Each round mixes task completion with discussion and suspicion.

The game borrows the social deduction loop popularized by Among Us and rethinks it around AI development. Instead of a generic traitor, the saboteur is a Hallucinator, and the tasks and sabotage are themed around LLM logic such as prompts and clusters. That changes what suspicious behavior looks like when everyone is supposedly an agent.

The creator submitted it to Vibe Jam 2026 and says they built it with opencode. They describe the codebase as new and the logic as nearly complete, with the game still waiting for its first real players.