Zoë Mode creative director Ste Curran has tweeted some exciting news for PC-owning puzzle game buffs: Chime, the music-driven XBLA block-dropper it created for the OneBigGame charity project, is coming to Steam next month. The game will be available on the service from September 6, and will be up for pre-order there later today.

Chime's a great puzzler as-is, but Zoë Mode is adding something extra-special for the PC release: a sixth level themed after Valve's modern classic, Portal, featuring Jonathan Coulton's "Still Alive." As with the XBLA version, 5 percent of the Steam purchase price will go to charity. Sounds like a triumph for everyone.