I made this game for Pirate Software's Game Jam 17, where the theme was "Only One." I took that literally—designing a platformer with just one control: jump.

The player auto-runs back and forth, and your only input is when to leap. You bounce through jump-thru platforms, aiming to climb as high as you can. Simple mechanic, lots of room for chaos.

I had grand plans—power-ups, level variants, high scores, slicker menus—the works. But right as the jam kicked off, my boss dropped a surprise week-long conference on me. So I had to scale way back.

This is what I managed to finish. It’s rough, but the bones are there.