Another classic has been given the open source treatment, with Descent 3 from Outrage Entertainment now available under the MIT license. This release was put up on GitHub by Kevin Bentley, one of the original developers.
This is a niche game for people with an interest in biology, about multicellular evolution that is unlike anything else out there. I am looking for other people to share creations with and maybe even have them face off in an environment together. It runs on an older version of Android but I use the bluestacks emulator to play on...