[Espy]

You're /old/, dammit, Sei!

TERA and BnS combat systems are like...uh...
Well, okay, a lot of MMORPG combat systems are where you choose a skill, click on an enemy and use it. Your positioning does not matter; if you are too far away, the game will move your closer until you're within range to use the skill/attack, and the enemy will hit you no matter where you are.

In TERA and BnS, if you fire off a skill and aren't close enough, it just doesn't hit at all. Your position relative to the enemy DOES matter; if the enemy has a cone AoE attack and you're in that cone, well sucks for you. As a Priest in TERA with a back attack racial boost, I tend to run behind enemies and snipe them with ranged from behind. By the time the enemy actually turns around, I'm long gone. And there's no "currently targeted" enemy; all you have to do to attack someone else is just turn towards the other enemy and attack. Targeting only happens with heals and buffs from the player's side.

Well, there are other differences, too, but those are a bit hard to describe. You'd have to actually play to know. I think a lot of not-multiplayer RPGs use this system, though...?