As promised, today Nintendo is finally bringing classic Game Boy Advance game downloads to the Wii U s virtual console. And the company is kicking off the service with a bang, releasing a trio of excellent games with Metroid Fusion, Advance Wars, and Mario Luigi: Superstar Saga. The games will run you $7.99 each, and you can play them either on your TV or on the consoles tablet-like Gamepad controller. New GBA games will be added to the service every week in April, with classics like WarioWare, Inc.: Mega Microgames! and Golden Sun slated to launch in the coming weeks. …