Sole Survivor was a massively multiplayer game based on original C&C, Tiberium Dawn. Servers went down over ten years ago and it was never included in any C&C collections. It was up to 50 players but you had to pick only one unit to play as, any unit in the original C&C. Team CTF was the most popular mode. Stats were modified from TD values, designed to even up units, and most were given more hit points,
Red Alert 1 is limited to 8 players but you can have multiple units in this version recreated for RA. Two or three per a player will probably make for most strategic and skillful games. Ants with their stats are substituted for viceroid and two of the four dinosaurs. All other TD units are present as well as some RA units.
Thanks to Myg whose sole server work I got most stats from and Nyerguds whose Sole Survivor map render images I recreated map35 going by.
More info and variations of first test map available at http://xo.cncguild.net/sole.html
It is designed for play on http://cncnet.org
I do not know exact numbers for weapons, warhead percentages, and structures. I have approximated weapon firing rates and ranges closely but do not know if damages or %'s were changed. If anyone has this information or where it could be found in sole.exe with a hex editor I would appreciate it.
Also available on my xo site is TD and RA1 combined together with at least four different teams within RA1. It's not as epic as the excellent stand alone game, Dawn of the Tiberium Age, which combines them together within TS' s engine but it has some things to offer.
These are all self-contained map mods that do not modify your game. Just play the map and it has the custom rules within it.