If you're looking for a game that's pretty hard to get good into unless you invest a lot of time in it:
http://gunz.ijji.com/It's basically a TPS where you have melee weapons and ranged weapons. You level up and buy new clothes and weapons etc.
But this game is different. You can learn so called "styles" which is basically a sword style (K-Style) and a Dagger style (D-Style).
These "styles" are pretty much the main core of the game. A style is basically a bunch of moves together which you can learn to use in your advantage. These "moves" are a pattern of buttons you press.
For example the most used move for K-Style would be:
Jump(Space)-> Dash(2x w/a/s/d) -> Slash (Left mouse button) -> Block (Shift).
And that's just the basic move. the real deal is to learn when to do what in what situation to win a battle.
You'll get much fame though if you do get very good...