The surface is gone. Site 23 is still here — power on, systems running, machines doing exactly what they were built to do with no one left to stop them.
Underbound is a PvP/PvE sandbox game set in an ever-expanding underground complex built to survive the end of the world. Fight hostile robots, take over sections of the facility by restoring power, and carve out your territory in a place that keeps growing the deeper you go.
There's always more ground to take — and more to lose. Other players share your world and fight for the same power sources you need. Control the power, and you control what lives in your territory — and what doesn't.
Fight hostile machines and rival players competing for the same resources.
Restore power to sections of the facility to claim territory and unlock what's inside.
Site 23 keeps growing the deeper you go. There's always more ground to explore.
Carve out your domain, defend it, and expand your hold on the facility.