Players manage an energy bar to jump, land on clouds for super bounces, and you can throw bombs at each other to steal points and cause chaos. Vanilla HTML/CSS/JS, no dependencies, ~1000 lines in a single file.
The kids designed the characters (Kirby and Kee Kee) and we had a blast playtesting together... tweaking cloud bounce physics, adding a tie screen for when scores match, bumping bombs from 3 to 5. Kid-driven game design is so much fun.
Try it here: https://kirby-sky-jumpers.mfelixstudio.workers.dev
Controls: WASD + L-Shift (P1) / Arrows + R-Shift (P2)
Please give us some feedback on how to improve!