A new demo for the PC version of the Penny Arcade game is now available for download.
Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness, as it's formally known, is an episodic RPG adventure game. It's been developed by Hothead Games together with Mike Krahulik and Jerry Tycho Holkins - better known to Penny Arcade fans as Gabe and Tycho. Monkey Island creator Ron Gilbert also stepped in to lend a hand.
Alternatively, you might like to try downloading Episode One in its entirety from Xbox Live Arcade. It'll cost you though - 1600 Microsoft Points (GBP 13.60 / EUR 19.20) to be precise.