Arrow or WASD keys to move. Press 0 to be in a god mode, press r during the god mode to reset, press l during god mode to change the level. When on a god mode, continuously press 1, 2, 3, or 4 to change the block type and press down the mouse to place the block. When pressing 4, there will be a Mario and if you place the Mario, that will be your spawn point. Press G to spawn the Goomba.
Watched @griffpatch video to make this. More update coming soon... @griffpatch さんのビデオを見ながら作りました。
