Use Arrow keys or WASD to move To edit, here are the functions: 0: TOGGLE EDITOR 1: SELECT LAYER 1 or ADD COLLISION POINTS or TOGGLE ONION MODE 2: SELECT LAYER 2 or TOGGLE ONION MODE 3: SELECT LAYER 3 or TOGGLE ONION MODE X: DELETE COLLISION POINTS P: SEE COLLISION POINTS E: EYEDROPPER TOOL SPACE: DRAG TILE WITH GRID (makes building houses easier) Select a tile from the grid by clicking it, then place it on the map. One thing to note is that to scroll in the grid, your cursor needs to be in it. If there are any issues, please leave a comment. (this is the map I used for testing)