Conquest of Elysium 3 dev log

[Gandalf Parker]

Alliances are supported by creating "teams" at the start of the game.
Your armies do not attack each other. You can share a location. Your army can hide in one of his castles (but not recruit there). You can participate together in an attack. And you can team with the AI.

On the other hand:
You cannot create a team in mid-game, and you cannot dissolve a team. No backstabbing other than maybe taking some of his resources if he didnt leave at least one unit there.

I guess you COULD do outside-the-game agreements for Dom3 style NAPs, alliances, and backstabs. But they also will have Dom3 style of non-sharing a location without your units attacking each other