When Guitar Hero World Tour was initially announced, one of the most interesting features was the fact that Activision said the game would sport a complete music creation tool, which was supposed to allow players to compose songs that could be subsequently shared with other players online. As the game was launched, Activision offered a popularity chart, which was meant to show what tracks were most played.

Unfortunately, the potential problems of the new music-creation program proved to arise rather quickly, as a lot of players promptly started to create songs that were pretty much identical copies of very popular video games soundtracks. Activision has moved quickly to take down those creations that were close to causing problems related to copyright infringement. After all, the company is probably not interested in getting sued due to the songs that players have created, and then uploaded for everyone else to download and play.

Many players have made music sounding a lot like original creations from Super Mario Bros. and The Legend of Zelda. However, a quick look at the online charts shows that, amongst the most played tracks, you can find music from Pokemon, Mega Man, Final Fantasy, Portal, Metroid, or DOOM.

Play them while you still can, because Activision's policy points to their being probably removed in the coming days. This, of course, means that someone else is going to continue to upload tracks that are similar in content, but have different titles. Especially when seeing that Still Alive, the much loved track from the ending credits of Portal, is one that you could download to play in Rock Band, the Harmonix became a rival to Guitar Hero World Tour.

It's quite possible for Activision to seek to introduce a system in which it can sanction players that upload tracks infringing copyright, with an option to even ban them from putting up any new ones.