Armored Core 2
   This game is awesome. You get to build a giant robot through a ton of parts and customization.  You can change your bots' colors down to the smallest details, you can even draw your own logo.  One player game has mission based combat and one on one battle arena. There's even a two player mode where you can pit your creation and skills against a friend. It retails for twenty dollars new so it's a great deal. 

Armored Core 2: Another Age is a different game but it is still very similiar to  Armored Core 2, Here are the main differences: There are a few more parts to mess around with, you start with more money (making customization easier),    and the missions are entirely different. The Arena mode from AC2 is gone, but there are new two player vs missions.      

Armored Core 3 is also out.  This game holds true to it's predecessors, incorperating the good stuff in AC2 & AC2:AA along with the new: this game will rock.  Fast paced mecha action never played so nice.
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