Namco X Capcom
 

An RPG made 2005 that has Namco and Capcom characters and was never released in America. I like the game its awesome.

I have the game....I only played about eight stages thank to my brother. He played over 30 stages, but got annoyed at the sheer length at the later stages. It is a fun game...it might help to brush up on your Japanese before you play it.