Timed to take advantage of all the anticipation surrounding Portal 2's release next week, Gaijin Games has released an update for Bit.Trip Beat that features a cameo from GLaDOS and new levels supposedly designed by the Aperture Science AI to push players to their limits.

You can currently buy this GLaDOS-enhanced PC version of Bit.Trip Beat for 50 percent off on Steam, or 75 percent off when you buy the "Potato Sack" indie game bundle on the digital distribution platform.

Gaijin Games teases, "Like the other 12 games in Valve's Potato Sack, it is rumored that playing Bit.Trip Beat between now and Portal 2's 'scheduled' release date might increase the chances that Portal 2 is released early. Interesting idea..."