This little known beauty was quite prominent in Japanese arcades in late 2005. Rockman EXE: the Medal Operation marked the EXE series' first foray into the arcade scene. So, uh...what is it?
Players deposit a specific amount of "medals" (arcade tokens) into the machine to initiate the game. Once started, you play a series of EXE 5 themed mini games in order to win a boatload of tokens to trade for prizes. Very little details exist about each individual mini game, all I know is that there's five in all with varying gameplay styles. If you check out the official website, you can sort of conjure up the objectives of each.
Don't you just love these obscure Japanese arcade games?