A fun, solid game. Defiantely worth picking up.
"Mobile Suit Gundam: Federation vs. Zeon" is a must-have for all Mobile Suit Gundam fans. The game is very fun, it really is. While some of the stages can get a bit repititive, the game is still quite enjoyable.
The MS selection really isn't all that great and I would really like to have seen more mobile suits to choose from, but there are still quite a few of them you can pick from. One thing I really like about this game is how it follows your own story. You are a soldier fighting in the One Year War. Just an ordinary everyday soldiers. You're not Amuro Ray, you're not Char Aznable, and you're not Ramba Ral or Kai Shiden. You're you and you're a simple soldier trying to survive.
The game will lead you through the major battles of the One Year War on the Earth, in space and in colonies (and A Baoa Qu and Solomon). You really don't need to know a lot about the "Mobile Suit Gundam" series before playing this game because a lot of the storyline will be explained and made clearer as you play the game.
Overall it's a good game and it is fun. Not a lot of replayability and once you've beat it there isn't much reason to replay it other then for memories and for fun, but the game is indeed fun nevertheless. It's worth picking up.