The Humble Bundle is basically a charity that will let you pay as much as you want, even $0.01 is enough, to get a bunch of games! But you will have to pay more than average, which is the average people pay for the humble bundle, to get the better ones out of the lot. They also support Steam (but you have to pay a $1 or more) It is also DRM free (which means you can get it as software)! But you better buy one quick, because they will come to an end!

The Humble Bundle team lets you choose you choose who you donate to: charity, the developers or even them!

They release a new Humble Bundle usually once a month, but they have a weekly one aswell. They also have a store but you can only buy them at store price with a discount.

Backstory:
I'm seriously too lazy, so just see it for yourself

And here's their motto: Pay what you want, DRM Free, cross-platform, Helps charity!