You can find hee a lot of usefull code / blocks / sprite to help you to do your projects. You can find : -a sprite that calculates the position of the mouse even outside the scratch screen -the Cloud Player by Griffpatch to make online games -a sprite who detect if your mouse is moving -some usefull maths tools -some usefull blocks, such as the detection of the scroll wheel, secret code detection, hacked blocks, "for i in range",... -and some all made code to detect uppercase / lowercase, a code who calculate the distance between two points, a code who convert seconds in years, days, hours, minutes and seconds and a code who makes sprite moves more accurate