It's a direct descendant of Dragonsweeper, which in turn is a spin of Mamono Sweeper. The game focuses on Android gameplay (touch, small screen size) and uses Kenneys tiny-dungeon assets and sounds from freesound.org.
You, a Squire of young age, were told to delve into the Dungeons below the castle and clean up the mess. You can feel the presence of beasts in the shadows. Luckily, the Dungeons are littered with useful equipment to complete your task!