★★★ Controls: ★★★ W/A/D or Arrow keys In Editing Mode: [ 0 ] Toggle Editor mode [ 1, 2, 3, 4 ] - Change tile item, click multiple times for different tiles. [ 9 ] - Places "Enemies" - Goombas & Life Mushroom, place and then press "0". You can place Life Mushroom on [ ? ] block [ E ] - Eyedropper, Press 'E' to pick tile under cursor [ L ] - Make a copy of the previous level, or load an existing level. Level 1 -> Level 2 [ R ] - Reset level, can change the width and height of the level and clears the level. [ Q ] - To toggle the auto arrange tiles feature.
Credit to @griffpatch for assets