Jam City Rollergirls could be one of WiiWare's biggest breakout hits: roller derby has a fanatical, rapidly expanding fanbase, and the revelation of this WiiWare roller derby title generated plenty of interest outside the usual download audience. Now we have the first screenshots and footage of the game in action, that interest could grow even higher.

A cross between roller derby and racers such as Mario Kart Wii, Jam City Rollergirls mixes licensed teams with out-there tracks featuring speed boost pads, classic oil patches and tractors. Over-the-top power-ups and plenty of physical contact feature heavily too, and on the whole the game looks like it's shaping up surprisingly well.

You can head over to our Jam City Rollergirls screenshots page to see the stills or engage in three minutes of motion below.