A lot of games look too compressed on the smaller DS screen, but they did a good job with Transformers Prime: The Game translating it to a smaller screen. There is still a lot of color and the characters look exactly like they do on the series. Given that these characters transform, I was curious to see how they would make that work well on a DS, but they did an excellent job. You can watch the transition from robot to car and back to robot without any hiccups. You can even do it over and over (which you will find is necessary to jump while in car form) without noticing any issues graphically. Each Autobot has a human companion. The humans look just like they do in the show as well. They are obviously computer-generated, but they looks good.
I really like when I play a game where the characters actually speak rather than when I just have to read text on the screen. When you have a game based on a TV show, you really want to hear the original voice actors as we just get used to how our favorite characters sound. Transformers Prime: The Game pleased me by using the original voice actors for the characters.