Yes, the games are backwards compatible with the controllers. However, the old controllers can not be used with the Xbox One, or PS4.
yes
Yes they are =)
No it isn't.
Yes, on Xbox 360 all Guitar Hero world tour, Rockband, guitar hero 3 games are definitely cross compatible with instruments (obviously not with using the durms on guitar hero 3) and more then likely guitar hero 2.
Yes, the games are backwards compatible with the controllers. However, the old controllers can not be used with the Xbox One, or PS4.
The Guitar Hero games are all backwards compatible, so they should work with the previous game's guitar, and also Guitar Hero games are compatible with some Rock Band guitars. You can also purchase third-party guitars, as long as they are for your game system and say that they are for Guitar Hero.
Yes it is compatible \X...X/
Yes. The Guitar is compatible with both guitar hero 2 and 3. Also, the guitar hero guitar on xbox 360 is compatible with rock band for xbox 360.
yes
Yes it is compatible with GH 5.
The Guitar Hero III guitar is completely compatible with Guitar Hero: World Tour provided you're still using it with the Wii.
yes
Yes any guitar is compatible with any game
yes
Yes they are 100% compatible.
The game is compatible with any guitar