Munkiki's Castles is one of the first 3D games on mobile phones, and it's a puzzle game published on Nokia 3410 in 2002 for the service called Nokia Club. In the game a little monkey must pass through several levels destroying blocks and collecting coins, trying not to fall down while moving with a grid-based system. The game was almost unplayable due to emulation reasons, but the most recent version of J2ME Loader seems to run the jar file without significant problems.