Awesomenauts has a soft, cartoony feel to it. The colors are never harsh, but they find their own little ways to stand out. The action is very easy to keep track of, even when things cluster up and get wild. I particularly like the character designs. While not all of them have their own novelty, most of them do. Additionally, everything is clean, easy on the eyes and zany enough to make for a livelier battlefield than you're probably used to.
Supporting the visual design of Awesomenauts with an adequate bit of audio design is no small feat, and it's admittedly more familiar than the visuals might lead you to believe. However, it's no slouch. It's always fun to have an announcer who's really into what's going on, and the music is appropriately energetic.