|What made X-COM 1 a classic is its mix of management and action. You had to shoot down alien ships, take your team to the crash sites to battle escaped aliens and all the while manage your bases. During the tactical combat missions you need to capture live aliens to study and interrogate them in the laboratories so you could research their technologies and advance your equipment.|
The tactical combat scenes were tile based and everything could be blown up. A classic tactic, for instance, was to throw a grenade on top of a roof to blow a hole in it and then throw a new grenade down the hole to blow up any inhabiting aliens.