https://www.moddb.com/mods/command-conquer-combined-arms
Worth a look for a new fan made entry into the C&C universe. The scale of the mod is huge...
Like, at first they fixed that weird error condition how you could detonate the tech lab Einstein is in, which broke a trigger and failed the mission. Now you just blow it up, Einstein is there and you can go from there.
And then I continued with the normal motions of this mission and... no, not gonna spoil it. That was a great introduction of new content to the mission. And the second mission does it in a similar way. Hah!
It guides you through installation and wraps the game in Wine and other layers as its own .Application for running on arm or intel macs. Porting Kit has bespoke configurations for compatible games.
Also see https://github.com/Kegworks-App/Kegworks (formerly Wineskin, the upstream tech leveraged by Porting Kit without the bespoke angle) which i've used for various modern games to great effect.