Rome: Total War Barbarian Invasion is a game based on strategy. You have a tutorial and you should play it first to learn the commands. Each troop is represented by a type of card. Double click and activate it. Move it with right click in the desired location. A really original game who will go in old years when Romans are fighting with all kind of enemies .They have different missions to make. Every army has a leader. Use cavalry and archers, manage your soldiers and move to the best places to attack.
You can use all troops to attack together and you need to destroy the enemy. Break them in parts and panic them. Is easy to play and is very exciting.