: Many players recommend the MegaMod to keep the game fresh, as it adds hundreds of new buildings and production chains that move beyond the "clumped" look of vanilla towns.

: The Banished are a mercenary splinter group of the Covenant led by the Brute chieftain Atriox.

If you are referring to the antagonists from Halo Wars 2 and Halo Infinite :

Depending on whether you are looking for information on the classic survival city-builder game or the literal definition of the word, here are a few "posts" covering different angles: