I loved DDDNNNAAAO's project, and the cool ghost effect, but it was sooooooooo laggy on slow computers! I've tried to fix it. It even runs a chromebook! All instructions are in the project :) You can press 0 to reduce the lag :) and 1 to bring it back :) Double click the green flag :) ALL LEVELS ARE POSSIBLE
Almost everything was made by @DDDNNNAAAO. I just changed a few values for less lag while keeping the cool effect.
