Appspy has found a Japan only Gremlins movie tie-in game! Hacha Mecha! Gremlin Wars was officially released by Warner Bros. and is a free-to-play tower defense game. Players collect Mogwais in order to prevent the gremlin forces from attacking Gizmo, and the graphics are chibi-style adorable.
Hopefully Japan will see fit to share this bizarre little game with the rest of us soon.