GGB does not have much in the way of storyline -- a continuation of the previous Gungriffon games' post-apocalyptic military scenario -- or extras, but it doesn't need those things. It is extremely fast and fun and easy to play, and it is a solid title worthy of buying.
This has got to be one of the nippiest first-person shooters we have ever played. It just reacts so well that you can''t fail to feel that you''re performing a useful role in the battle and are not just there to stomp around while looking fierce.
Unfortunately, its enjoyable for maybe a week. By that time, all five missions will have been finished and youll get tired of the bland graphics. If you were hoping for something similar to "Mechwarrior 4," keep waiting.
It needs a few more levels and a few multiplayer options to enter into the top tier of elite PS2 action games, but until then it's an all too brief affair worth playing but not owning (unless you're committed).