the slot was never made for games. I believe there is one single cart game in japan, but it's very basic and quite crappy.
ultraman and kof 95 both have their own proprietory ROM card, which doesnt work with anything else (the kof one doesnt work with ultraman and vice versa as well) both games have a cd as well though
no im not. they are ROM(read only memory) carts, which hold extra information for the game(as opposed to being RAM (random access memory) carts, which can store anything sent to them, the rom carts cant be rewritten, and already have the information required for the game on them) they were used because its faster to access data from a rom chip than a cdrom disc a RAM cart is used by a few japanese games, mainly fighters, and that just stores extra information loaded from the cd into it during the game
afaik, no they havent id open mine up and tell you what chip is in there, if i could find my gamebit screwdriver
