Gravity Jumper: First small game, made in two evenings

I wanted to ship something small, so I scoped hard and built a simple gravity-flip arcade game over two evenings. This is my first game. Space toggles gravity, obstacles drift and adjust slightly, and the score climbs as you pass them. There’s a start screen, game over, and quick restart. Difficulty ramps up over time.

If you played it, I'd be very grateful for any feedback.