I always felt Alpha Centauri did things well. You had as much time as it took you to move all of your units that still had movement points. When you had no mo

I always felt Alpha Centauri did things well. You had as much time as it took you to move all of your units that still had movement points. When you had no more units with free movement points, your turn ended. And for the record the AI in that game could be brutal.