Money Idol Exchanger for the Gameboy
I mean it's a puzzle game like alot of puzzle games out there (most similar to Bust-a-move)...but using...money (yen), instead of bubbles or blocks. I thought it was weird anyways.
I believe there was a PS2 version, as well as a US MVS version under "Money Puzzle Exchanger".
edit: was Toilet Kids on the PCE ever released in the US? If not...that wins the funniest/oddest