just go to that link, please. scratch is too laggy to handle this. use wasd and space key to move. use arrow keys to turn. avoid red cubes and reach the green cube to win. press the enter key to enter or leave editor mode. in editor mode, you can move freely by using wasd as well as q and e keys. in editor mode, pressing 0 set the block you are currently at to air, 1 to set to ground, 2 to set to red lava, 3 to set to goal. also, press c spawn an enemy. press z to save the code. press x to load one. always type "yes" on the first question if you want to save/load
credit: @MathMathMath and @Griffpatch for amazing tutorials