I’m probably somewhat behind the times, but it’s worth a mention regardless. The Humble Bundle.
The first one I saw was the Introversion bundle. If you’re not familiar with Introversion, they are the guys behind Darwinia, Uplink, Defcon and not forgetting Multiwinia. Four games worthy of note in their own right. But the humble bundle is awesome. Pay more than the average (yes, you get to pick what you want to pay) and you’ll also get a couple of tech demos from Introversion, Crayon Physics Deluxe, Dungeons of Dredmor and Aquaria as a bonus… oh and did I mention you can also get the source code for Darwinia, Multiwinia, Defcon and Uplink too?
To say that this bundle is a bargain is an understatement, great games, great price and source code too… amazing.
So, if you’ve not encountered the Humble Bundle yet, head over to The Humble Bundle and check it out.