This release adds co-op AI, and other enhancements! To play with co-op AI players, just pick your character without having other human players join, and the unchosen players will be replaced with AIs. Check out this gameplay video:

Downloads: https://sourceforge.net/projects/c-dogs-sdl/files/

Full release notes: https://github.com/cxong/cdogs-sdl/releases/tag/0.5.3