https://www.humblebundle.com/Wikipedia wrote:
The Humble Indie Bundles or Humble Bundles are a series of collections ("bundles") of video games or music albums that are sold and distributed online at a price determined by the purchaser. The games are multi-platform, DRM-free, and independently developed, and buyers can set the revenue split between the developers, charities and humble bundle organizers.
I've got the last two (the Music bundle and the third Android bundle). Despite the title, the games in the android bundle can also be downloaded in Windows, Mac and Linux versions. When I first installed Uplink, from the latest bundle, I was playing it for hours. First time I've gone to bed after dawn in many years!