99% Pen Physics Engine by @rukai Check "Slip" - https://scratch.mit.edu/projects/258025953/ It has an updated physics engine added from this project. This physics engine is 99% pen! (more like 80%, I guess because the there is a 100 ghost effect ball) - Side arrows or AD for horizontal movement - Up arrow or W to jump - Down arrow or S to fall quicker - Double click down arrow or S to drop through platforms - Space key or click to shoot The physics engine is a modified version of @djpro 's "How to make a platforming script": https://scratch.mit.edu/projects/34429446/ It was modified by me to make ceiling and ground detection smoother, and also accommodated for pen. I also added bounce (can be turned on and off), since I thought it would be interesting with the quicker falling ability. If you want to use this, credit should go to @rukai and @djpro (@rukai for pen, and @djpro for most of the physics). I know it's hard to understand how things work in this, but I think the custom blocks make it clear enough to understand how to make the pen platforms. My 100% Pen Ping Pong (check this one out) https://scratch.mit.edu/projects/255673428/ My Pen Number Typer: https://scratch.mit.edu/projects/256098644/ My Pen Mouse Trails: https://scratch.mit.edu/projects/254114153/