I just finished beating this game and was surprised that there wasn't a thread for it.
This was a pretty good but not great game. It was, however, the best Transformers game since Transformers: Armada for the PS2. I think it would have been more enjoyable if the graphics hadn't been so dark. Out side of Optimus, Ratchet, and Soundwave, I was disappointed with the voices. I would have rather had more G1 voices since this game was a precursor to the G1 series.
I would have liked to play all the characters in the every level of the campaign mode, although I realize it would have been impossible on the jet levels. The final boss was one of the hardest bosses I have ever faced on an Easy difficulty.
All in all I give it about a 7.5-8 out of 10. Moderate replay value as it fun to play through again as a different character. The multiplayer is pretty fun, after you get used to it. First starting out, you will get angry at the gameplay until you learn how to use each character. The biggest problem is, not to many people are playing multiplayer, (around 1,000-2,000 at a time) so if you get a match with someone you can't stand, there is a good chance you will see them alot.