Once again, it's time for another
Humble Indie Bundle. In case you aren't aware, these bundles let you pay any amount you want for a set of DRM-free, Indie games that you can download and re-download as much as you want, anytime (you can even get Steam and Desura keys). Seriously, you can even choose to pay as low as a penny, although you're a douche if you do. You can also choose what percentage of your money goes where, with the options of two charities, the developers, and the Humble Indie Bundle itself.
Every donator gets the game
Frozen Synapse, but if you pay more than the average (which is currently around $4.50), you also get
Trine,
Shadowgrounds,
Shadowgrounds: Survivor,
Splot, and
Jack Claw.