super robot wars!
why?! where else can you play a game that let's you play all anime characters with their mecha joining forces against their enemies as well in an awsome anime style tactic rpg! imagine gundam, eva, voltron, macross, tekkaman, full metal panic, and etc. all together. especially for anime freaks...heck they love this game.
here's an exmple, super robot wars mx for ps2...