You are a skater going downhill on an open street. Use space bar to ollie, up arrow to push, left and right arrows to turn, back arrow to powerslide. Ride around traffic and parked cars, pick up boxes for pints. It would have been a waste to throw out years’ worth of skating gameplay so Downhill Jam still includes some of that. Downhill jam: Cruise through the city streets in Downhill Jam. Turns out Tony Hawk's Downhill Jam on DS is a little of both. Tony Hawk's Downhill Jam is just that; a downhill skating game.