This is a generation engine I made, press G to generate, if you want to regenerate, press the flag then press G again, click on a block to delete it, click on air to replace it with your current block, which can be switched by pressing B and typing the block you want, the current blocks are "Air" "Grass" "Dirt" "Stone" "Coal" "Silver" "Gold" "Copper" "Diamond" type any of these without quotations when selecting a block, the player can be moved with a and d to move left and right and w to jump, the collision is a bit wonky but this is a generation engine, not a collision one. Press R to reset your character, sometimes the reset doesn't work if you're inside a block, if you are, just wait, you should start to float out. You cannot spam click break and place blocks because I had to put a cooldown to prevent the placement being weird.
Made by me