Ready, set, race!

Mattel and Budge Studios — creator of the Barbie Dreamhouse Adventures and Thomas & Friends Go Go Thomas mobile games have officially launched Hot Wheels Unlimited, a racing and track-building game for iOS and Android devices.

In the game, players can roll into Hot Wheels City to complete puzzles and challenges, collect virtual Hot Wheels cars, and race against friends in the Build-A-Race Festival. It also features a builder mode that kids can use to create epic mega-tracks with ramps, loops, and boosters.

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Hot Wheels Unlimited is free to play on the App Store, Google Play, and Amazon App Store. Kids can also subscribe with the Ultimate Pass to compete against other players in head-to-head races, unlock additional challenges, gain access to special track pieces, and more.