Welcome to Metro Mayhem | Underground Co-op Metro
Welcome to the official subreddit for **Metro Mayhem**.
### The Premise
You and your crew operate a geothermal metro through subterranean tunnels beneath a frozen world. Every system — propulsion, headlights, cabin heating, fire suppression, cab controls — drinks from the same boiler pressure.
Behind you, forty shivering passengers have paid, complain, and freeze when you are late. Complete your shift, manage your steam budget, and keep the line running.
### Current Status
The game is in active single-player vertical slice development in Unity 6 (URP). Multiplayer co-op will follow once the core loop is fully validated solo.
Technical devlogs, engineering deep dives, and upcoming milestone updates will be shared here.
Posted Sep 8, 2026, 11:45 AM UTC