One of the ways you can program your tanks in Carnage Heart: EXA is to have them bounce around the battlefield. Another option is to have them float. Natsume demonstrated both options with a video of the two kinds of tanks—and a third type with legs—battling it out:
Carnage Heart: EXA is slated for release on the PSP this year, but Natsume haven’t announced a release date yet. Rather than putting you directly in control, the game lets you program OKE tanks that do the battling for you.