
It has a Rumble Pak built right into it. The Pak is powered by a single AAA battery. You can't take the Pak out of the cartridge to use it with another game or something (I don't know why you would anyway since it wouldn't work).
When you start the game you can choose between three options; I'll explain them for you who own the illegal ROM but can't read Japanese. You can choose to start the game, look at your Pokedex, or toggle between options (this is where you can switch the rumble off or change controls).

* Pikachu actually says his name (just like in the TV show), it's like that in Pokemon Yellow too. *As you score more points the game will reveal a Pokedex.You can also play mini games like a Block Breaking Game.

Pokémon Pinball is a pinball adventure, like Kirby's Pinball Land, with lots of different machines and cool bonus features! One of the coolest features is the GB Rumble Pak! Just like the N64 version, the Rumble Pak will make your GameBoy shake and rumble! This feature is built into the game pak itself, so you don't have to worry about buying a Rumble Pak separately.