Olde-Skuul/doom3do

The source for Doom for the 3DO. Probably of most interest for the WADs, which are the same as the Jaguar version (i.e. different from the PC one). I doubt that the blanket MIT license in the source tree is correct, though...

to 3do doom games retrocomputing source ... on 06 December 2014

Micropolis - OLPC

Source for the Unix version of SimCity.

to games retrocomputing simcity simulation source ... on 27 October 2014

keendreams/keen · GitHub

Source code for one of the Commander Keen games. The nice thing is that they've found several versions and imported the history into Git properly.

to games id keen pc retrocomputing software source ... on 20 September 2014

Ian Bell's BBC Elite Page

Source code for the BBC version of Elite.

to acorn bbc elite games source ... on 20 September 2014

Flat Rock Software · GitHub

Before id were id -- source code for some of their early games.

to games id retrocomputing source ... on 26 July 2014

masonmark/Dash-Board-for-Newton-OS

"This is the (very belated and procrastinated) open source release of Dash Board for Newton OS." Complete with story about recovering the source from a MacOS version of CVS and getting it to build in emulation...

to archive cvs macos newton recovery retrocomputing source ... on 15 December 2013

mtuomi/SecondReality

Source for the classic PC demo.

to demos graphics retrocomputing software source ... on 13 August 2013

Debian Sources | Debian sources

Browse source code for Debian packages. Handy!

to debian open-source software source ... on 11 July 2013

billbudge/PCS_Atari800 · GitHub

Source for Bill Budge's Atari 800 Pinball Construction Set (following on from the Prince of Persia source being published). I wonder how many other classic 8-bit games still have source hiding somewhere out there?

to 6502 800 atari games retrocomputing source ... on 24 March 2013