On: Id Software Open Source releases on GitHub

[timothya]

It'd be really interesting to see more game development companies from the 80's and 90's release the source code for old abandonware. I was hoping to see Commander Keen (one of my favorite old games from my youth) on this list, but apparently it's still closed source.

[albertzeyer → timothya]

Afaik, there are (were?) some licensing issues why Keen stayed closed.

There is a compatible Open Source clone, though: http://clonekeenplus.sourceforge.net/ (Disclaimer: I work on that project.)

Btw., a very nice history of Keen (also referencing some of the licensing issues): http://www.3drealms.com/keenhistory/index.html