You can get it wireless for PS3, Xbox 360, and Wii.GH 3 is awesome...I have it for my Wii...the only wireless one out there...and it is the best.
should he not have a console to play it on, my rec. is for the Wii!
i this game! just started playing, (i'm a total n00b still) but it's so fun! get the wii version if he doesn't have a console yet. it's the wireless version on the market, but the only downside is that they dont have a separate guitar for another player sold separately yet. it comes with the guitar & game for now. he can certainly play by himself for the time being. lol. i'm sure he'll have no problem with that.
i also second, thatbaglady. Rock Band on the PS3 is a really fun game! people get to be singers, drummers, etc!