Humble Indie Bundle X is now available, offering a selection of acclaimed indie titles for anything upwards of $1 if you want Steam Keys.
The initial bundle includes To the Moon, Joe Danger 2: The Movie, Papo & Yo, and Runner 2: Future Legend.
Pay more than the average price - currently $5.63 - and you'll receive Reus and Surgeon Simulator 2013.
All this has a value of over $90.
The fee you pay can be divided up as you choose between the developers and/or two vital causes: Child's Play Charity and the Electronic Frontier Foundation. There's also the option to tip Humble Bundle.