Gundam fan or not, this game is worth picking up.

If you don't know much about "Mobile Suit Gundam" that's completely fine-- "Mobile Suit Gundam: Journey to Jaburo" will guide you through a good portion of the storyline.

Overall the game is a lot of fun. No doubt you'll be able to enjoy it even more if you're already a Mobile Suit Gundam fan, of course.
There isn't much to dislike about this game, except that it's insanely short... It's only about nine levels. Other then that it's a good game and worth being picked up.
When you complete the story mode there's even a versus mode where you can be your "own character" and unlock a few mobile suits both on the Federation and Zeon sides of the war.