Blue Dungeon - Tear Defense is a free-to-play defense strategy game developed by POOM GAMES for Android devices. The game's concept revolves around purifying hearts with tears, and players must summon tears to create fairies and merge them to make them stronger. The ultimate goal is to collect fairies and build powerful decks to heal the hearts.

The game's mechanics are straightforward. Once the fairies are batched on the field, the battle starts automatically. To win, players must develop strategies that suit the enemy and boss. Upgrading fairies and items is also essential to progress through the game. Blue Dungeon - Tear Defense is a simple, yet addictive game that will keep players entertained for hours.