By A Mystery Man Writer
Tony Hawk's Pro Skater 1 + 2: Downhill Jam Valve Locations
How to Open 5 Valves, Downhill Jam
Tony Hawk's Pro Skater 3 (Game) - Giant Bomb
Downhill Jam - Tony Hawk's Pro Skater HD Guide - IGN
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Secret Tape Location in Downhill Jam Tony Hawk's Pro Skater 1 + 2
Downhill Jam, Tony Hawk's Games Wiki
Tony Hawk Pro Skater: Every Valve Location in Downhill Jam
Tony Hawk's Pro Skater 1 + 2: Downhill Jam - All Park Goals, Gaps