While you've been able to play 1 on 1 in single-player against the AI and online multi-player for a while with The Fertile Crescent, it was missing team games which have now been added.
This currently free indie retro Age of Empires-like game is an absolute gem, already quite polished too. The addition of team games is awesome, although only currently available for online play. You can pick all sorts of combinations too like a free for all, 2on2 and 3v1 across a new larger map. Online play is easy though, as they already have a nice working lobby system.
Other additions in this update include Revolters. If you lose somehow be it through starvation, military defeat or a disconnection your leftovers now turn into revolters. This allows you to continue watching what happens, while having no direct control. These revolters will attack other players too.
Lots of other smaller changes made it in. Their lobby had improvements to wait until everyone is ready to start a game, chat improvements for online play, the AI for offline play got a bit smarter again, art and animation improvements in a few places, new tooltips and lots of bug fixes.
If you usually enjoy real-time strategy games, give it a try.
Find The Fertile Crescent free on itch.io.