Arrows/Wasd to move, Space to place tile, press 0 to enter dev mode, delete tiles using X, press 1 to save, and 2 to load. All credits go to alexside5, who basically did all of the code for me.
Update Log: 6/4/26 - Added tile colors 6/3/26 - Added saving and loading, fixed deleting tiles 6/2/26 - Fixed dev mode bugs, added tile sizes, changed starting platform, added delete key 6/1/26 - Added dev mode