M2 Dungeon Online Roguelike invites players into a perilous hardcore extraction roguelike experience, set in a realm where only a handful of warriors survive amidst ancient dungeons teeming with monsters. Players must navigate through these treacherous environments to find portals and return to the city with their loot, but beware—death comes with severe penalties. Losing means sacrificing experience, items, and even equipped gems. To mitigate losses, players can employ item protection objects that last for seven days.

The game features a third-person shooter (TPS) camera system, transforming the gameplay into an action-packed adventure rather than a traditional top-down strategy. Players must rely on their pets' light and torches to illuminate dark corridors while managing limited health and mana potions. Manual combat adds an extra layer of challenge, as automated systems are removed, making every encounter reliant on player reflexes. With only ten dungeons to explore, each filled with aggressive creatures, M2 Dungeon promises a thrilling and intense gaming experience.