Skatefall is John Freeborn's tribute to one of the earliest platformers, the Atari 2600's Pitfall! With a bodacious new skateboard, online scoreboard, bonus items and powerups, 2D platforming has a new name: Skatefall Harry.
Tap the [right] or [left] arrow to move in either direction, and keep pressing the button to gain and keep up your speed. Press the [spacebar] to jump.
As a homage, Skatefall is extremely effective and faithful; the graphics and sound are perfect and the difficulty, while formidable, is appropriate. To be honest, I haven't been able to make it to very many of its 255 levels yet, so I can't say if vines and alligators make an appearance, but here's hoping they do.
Cheers to Drew and Andrew for suggesting this one! =)