These look like a lot of fun. I have one of those tiny remote control cars, but this adds an additional level of fun to the mix, all courtesy of Konami.

Any DigiQ tank can fight any other one, and any two can team up. You just have to set all of your tanks to different ID numbers. Four numbers are available, and it's easy to change. In team mode, if you choose to use it, the tanks with IDs 1 and 3 fight the tanks with IDs 2 and 4. Simple enough.

This is the plastic toy soldier enthusiast's wet dream. Thanks to the TechZone and DansData for the link and review.