Learning to play the guitar via video game

When I woke up Sunday morning, I came downstairs to find my husband playing his guitar. Well, to be more specific, he was playing one of the video games that teaches you how to play the guitar. (A real guitar, not a guitar-shaped controller.) If he keeps up with it, maybe I'll buy him a vox amplifier at Guitar Center so he can play without the game. That will depend on whether or not he keeps playing. At least it seems the game will be helpful!