An arcade sandbox that you can play with friends in co-op for up to eight people. The main character is an explorer who wakes up in an ancient dungeon filled with hostile creatures, traps and treasures. To survive in this dangerous place, the hero needs to find powerful equipment, upgrade his abilities and build his own base as a refuge. Locations in the game are randomly generated, which makes the gameplay replayable. The main danger to the character is represented by huge monsters, including bosses.