Verified answer

You can play Rock Band without a mic, same with Guitar Hero, you only need the mic if you want to sing, to do that you obviously need a mic.

play guitar hero world tour ps2 microphone

I just tried it with a copy of the game from a friend like 10 minutes ago and it didn't work. you can't do anything, it basically won't let you start any song without a microphone. maybe it is differnt on other consoles but on the ps2, you need a mike even if you don't care about singing.

edit:

hmm looks like i was wrong

you might want to read this, it just might work. I don't know yet but i'm going to try too!!!:

http://www.gamefaqs.com/boards/genmessage.php?boar...

the wii and ps2 version Require you to have at least one of the peripherals. only xbox360 and PS3 can play with the controller(3 & world tour only,not including demo's)

no you dont i have it on ps3 and i just use the guitar and drums with friends that come over