Humble Bundle and Frozenbyte launched a package that includes "Trine", "Shadowgrounds", "Shadowgrounds: Survivor" and also a "Splot" pre-order and a prototype version of "Jack Claw". The three main games are cross-platform, DRM free, and you pay what you want. This package also supports the EFF and Child's Play. Additionally, this is the Linux debut for "Trine" and Mac debut for the "Shadowgrounds" games.
"Pay what you want. If you bought these four games separately, it would cost around $50 but we're letting you set the price! Choose exactly how your purchase is divided: Between Frozenbyte, the Electronic Frontier Foundation, or the Child's Play Charity. Also, if you like this deal, a tip to the Humble Bundle itself would be much appreciated!"
Find more info at: http://www.humblebundle.com/