Tip: Try turbo mode with this, and if it's slow, then maybe try Turbowarp, it's fast enough (for me) that it only requires Scratch This project actually doesn't use a forever block... It does this through a programming concept called recursion! Basically, the function which randomly draws with the pen will call itself and then run itself. It goes like this: Function finishes then calls itself Function starts, finishes, then starts itself again and then that happens forever, without using the forever block!