This is Pico’s Planet. A Remixable Platformer Engine. This includes an updated Pico Sprite, a gradient background, level 1 platforms, and a portal. The jumping system may not be the best, but the game is Remixable! Fix all glitches you want. That brings another point. This may be really glitchy, please don’t mind it.
The updated Pico came from Griffpatch’s idea of the updated Scratch Cat. I created a stand position and others. Happy Remixing!