This is a deathmatch scenario designed for intense battles. A 300 population limit helps armies to grow large.
Being an effective fighter is offset by being an effective ally. If you or your ally gets eliminated, the other will become easier to attack. Allies face outward from each other and are back-to-back.
Naval fleets are the workhorse of your military efforts (as allies are separated from all enemies by water).
Can be played as a multiplayer map (as usual all players must own a copy of the map) or as single player against AI. Though better battles will be on multiplayer.