Everyone thinks a lot about what’s above us, but rarely about what’s beneath. A mysterious structure was found in the middle of the desert. Its entrance leads far below—into depths no one has ever recorded. This is the Underworld.

Wave-based coop roguelike

Fight waves of monsters and move deeper into the Underworld. Waves get harder, and some are special. Find the boss, defeat it, and descend to the next layer. Each layer has its own enemies, environment, story, and boss. Pick your route, stack perks, and go deeper to discover what the Underworld hides.

Spend your points wisely

Each monster you kill gives you points. Spend them to open doors, buy perks and weapons, or try the Mystery Box. Doors change your route and how fast you reach shops, events, and the boss room. You can also save points and extract them into Undercoins, a permanent currency you use at the Tavern. In co-op, plan together: every point matters.

The Tavern

The Tavern is your hub between runs. Here you rest, talk to NPCs, and spend Undercoins (your permanent money). You can turn run points into Undercoins at extract spots, then use them to unlock new weapons, perk levels, starting kits, and small boosts for your next run.

Procedural generation

Every run is different. Underworld builds each level dynamically, mixing hand-made rooms with smart random rules. You will see familiar shapes, but the path, the fights, and the rewards change each time. You must adapt and prepare your team to pick up right upgrades for what the game throws at you.