iStunt Reloaded is an improved and expanded version of iStunt, a physics-based, 2D arcade snowboarding game.
iStunt Reloaded's graphics have gotten slightly more sophisticated, but its gameplay remains the same: you tilt your device left and right to rotate the angle of your snowboard (when you're in midair, this is how you perform flips), you jump with a quick swipe up, and you crouch (to pick up speed) by swiping down. Each of the game's 30 levels challenges you with a stunt-filled course (with checkpoints to save progress), from straightforward jumps and flips to much more convoluted combinations of challenges and obstacles including fans, cannons, spinning saws, and zero-gravity zones. There are even "gravity inversion" areas that flip your perspective 180 degrees, requiring you to flip your device over midgame (although you can turn this feature off).
The price of iStunt Reloaded has fluctuated erratically, but it's definitely worth a free download. Fans of similar sports simulators (like dirt bike racers) won't be disappointed.