Mazmorra.io is one of the new featured iO games. It's free for all to play online and work together with teammates. Besides, there are many hidden upgrades waiting for you to unlock. Hop into the adventure of Mazmorra.io unblocked and start off with a hero. Move throughout the dungeon and conquer every level by slashing monsters. Remember to loot crates on the path, collect potions, coins, and valuable items! They are useful to regain HP and much more. Good luck!