About Pinefall Midnight Slalom

Carve down a moonlit mountain, dodge the pines, jump the ramps and land clean for a speed boost to beat your best time.

On a computer: A/D or arrow keys to steer, Space to jump, S or Down to tuck for speed
On a phone: Drag left or right to steer, tap to jump, swipe down to tuck

Timothée described this game in a sentence on OhMyGames and the AI built it. You can make your own the same way, free to start.