Endless Dungeon is an engaging blend of roguelike and tower defense gameplay, set in a richly detailed sci-fi universe. Players take on the role of various heroes who find themselves stranded on a mysterious space station overrun by creatures called "the Forgotten." The main objective is to explore the procedurally generated levels of the station, gathering resources, and ultimately escaping. Each playthrough is unique due to the ever-changing layout and enemy placements, ensuring that no two runs feel the same.
Players can select from a diverse roster of characters, each possessing unique abilities and playstyles, which adds depth to strategic planning. As they journey deeper into the station, players must manage resources wisely, construct defenses, and fend off waves of enemies. The game encourages teamwork, especially in multiplayer modes, where friends can join forces to survive the relentless onslaught. The art style combines pixel graphics with atmospheric settings, creating a captivating experience as players uncover the secrets hidden within the station, all while facing an ever-increasing challenge that tests their skills and adaptability.