This is a 4-player scenario with a computer in the middle, with two teams of two humans and no set victory conditions. The humans on the same side of the river are teammates. The 4 human players have a rather large amount of resources, while the computer has minimal resources. In theory, a human could play player number 5, but it would be rather difficult. Players 1 and 2 must kill players 3, 4, and 5. Players 3 and 4 must kill players 1, 2, and 5. Anyone foolhardy enough to try to play player 5 must kill ALL the other players to win. Of course, this is all assuming that you have the victory as standard or conquest... There are no ruins or artifacts, but players can win by building and holding a wonder. The only advantage player 5 has is having two warships, but there is little water, so he/she probably won't be able to use them for a while. Players 1 and 3 tend to have more defensive positions, while players 2 and 4 can be more agressive, because of their positions on the map. Singleplayer also : Yes
This is a four player, 2v2 standard victory condition scenario with a Stone Age start and default resources. The map features a central river with rows of cliffs on each side and only a single opening in the cliffs. A computer player also patrols the crossing to make it even more difficult. This is a decent idea but player will have such a hard time getting across the river to the other team that this becomes a very defensive struggle. The best strategy is to basically "wonder rush" - that is, build a wonder as soon as possible and defend since defending is so easy. I like my scenarios a lot more open than this one with multiple access paths between sides. This is very closed which turns it into a boring game.