SI Engine is a modded version of gloogunner's Playable Four-way Fracture. I've added new things like changing keybinds, note splashes, fixed the bug where misses wouldn't take away health, and added miss animations.
og assets: https://scratch.mit.edu/projects/711415080/editor/ ays fwf, https://scratch.mit.edu/projects/713512336/ title card, and https://www.youtube.com/channel/UCMQwegZjoKpcGfhWA4klrJw four way fracture OG song