Use TURBO mode (hold SHIFT and click the green flag) The "1 Line Challenge" is to produce an interesting pattern using only ONE line of code to calculate the color of each pixel. I cheated quite a bit, but I think the outcome was worth it! Press: 1 - Circle that follows mouse 2 - Fade colour depending on mouse location (move mouse around slowly) 3 - Cool colour-changing circles 4 - Adjust a wave with the mouse Seeing as I have been doing more pen-based projects recently, I figured I may as well try this challenge. I think it came out good! Thank you @Scratch-Minion for making this challenge! I had a lot of fun with it!