W/A/S/D or Arrow keys to move Use Fireballs by pressing the 'X' key as Fire Mario. [ 0 ] - to toggle Editor Mode In Editing Mode: [ 1, 2, 3, 4, 5 ] - Change tile item, click multiple times for different tiles. [ 5 ] - Solid bushes, Slopes (Doesn't support auto arranging) [ 9 ] - Places "Enemies" & Power-Ups- Goombas - Piranha Plants & Life Mushroom, Koopas, Fire Flower, place, and then press "0". You can place a Super Mushroom (or Fire Flower) on the ? block. [ E ] - Eyedropper, Press 'E' to pick tile under the cursor [ L ] - Make a copy of the previous level, or load an existing level. Level 1 -> Level 2 [ R ] - Reset level, or to change the width and height of the level and clear the level. [ Q ] - To toggle the auto arrange tiles feature. [Spacebar] - For example === If you want a draw blue platform (semi-solid) in front of the orange platform, Press the Spacebar as you drag. NOTE: The bricks don't break when Mario headbutts them.
Credit to Nintendo, Griffpatch, and @fernandotheimposter.
