A grid based dungeon crawler like known from the old rpg days. Random generated dungeons/items/quests/monsters. Fans of classics like Might and Magic or Demise should know the idea. When multiplayer is implemented windows and android clients should feel basically like the same game (except controls and gfx)
Since the dungeon gets more attractive with more content (well, more or less) i added some minor light sources which should give some more dungeon atmosphere