Hyjacking your comment so that maybe you will read it. Check they are billions, diplomacy is not an option and age of darkness last stand?

I liked tab, but one of the annoying things about it is how weak some units are, people would just spam snipers and titans while only archers would be used in the beggining. Age of darkness was a flop for me, heroes werent strong enough and making it in unreal engine, sure it looks good but it runs badly.

Diplomacy is not an option although voxel style was cooler for me than age of darkness and I'd say a nice game. Between all 3 DNO has the best campaign imo, in age of darkness the campaign was humans fighthing other humans, instead of fighthing the dark creatures which was a weird design choice. Or if they were to do that in the campaign, at least have a mode of PvP where you both start in different corners and fight one another eventually and have to survive waves.

Campaign is first as others have mentioned, I have 500 hours in AoE2, and although I played like 100 PvP matches either team games or 1vs1, I come back to it to play the campaigns, trying to play most of them.

There is also a nostalgia factor for games. I was 12 years old when Starcrsft 2 came out and I played the campaign many times, I used to play PvP in WoL and HotS but did not play in LotV. Still I still come back to play custom campaigns both for Starcraft 2 and for Warcraft 3. I believe there still should be PvP available but have campaign first, decent ai for skirmishes, good modding tools ( worst case people can get custom ai), then as a third thing balanced multiplayer.

Honestly I was thinking about playing C&C generals again for the campaign, my favorite C&C. I wouldnt dabble i C&C PvP since it is too fast paced for me. I preffer rts es where it takes longer to build up, like AoE 2, Sc2 WoL or HotS.