Transformers makes excellent use of the PSP's visual capabilities. Though not nearly as detailed as the console versions, characters use the modeling data used in the movie, so you are getting a pretty accurate rendition of what you see in theaters. The models look and animate great with the only blemishes being the blurry textures and a few clipping issues - common problems in a majority of PSP titles. Several Generation One characters are also included in the PSP version, such as Shockwave and Hound, bringing the grand total to 25, more than any other version. The re-imagined characters fit right in with the movie characters, though some designs, like Thundercracker, look a little silly and make you think that perhaps some of the movie's designs are not all that bad.
Although all of the levels lead you through a linear path, a few are successful at making you feel like you are in a larger environment than you really are. Some even feature destructible obstacles like rocks and trees. Larger items, like bridges and doors, can also be destroyed, though they tie into mission objectives.
As with every other version, many of actors from the movie reprise their role in the game, so if you still have not had your fill of Shia LaBeouf, here is one more opportunity. The two most notable appearances, at least for Transformers fans, are Peter Cullen and Frank Welker, the original cartoon voices of Optimus Prime and Megatron. Considering the source material, the voice acting is generally good and gets the story across.