You have fleet and army counters. Both have a combat value of 1. All terrain has a movement cost of 1. There's a regular CRT and a siege CRT for attacking cities. Units have ZOCs but you can pull out of them at the start of your turn.
Fleets can ferry around armies.
One can convert areas to another religion by having a missionary unopposed in them. In addition, you have to pay on a per unit basis for them to attack and defend. The intent is to force periods of peace where you build up a cash reserve to fund the periods of war, where you spend it. Each player has their own unique victory conditions, of which one randomly chooses from a set for the advanced game.