It's slow but this is my attempt at making something that's semi functional Press SPACE to delete all tiles, click to change the tile If you want faster loading times, use less tiles or run it on turbowarp 60 FPS. Unless you want to make your project completely on turbo mode? If you want to use more than 9 tiles, you'll have to have the other tiles past 9 associated with a letter or other symbol represent tiles in the data Also, you'll need to make sure the tiles fit exactly or it'll look janky (look at this for an example
if you wanna use this in a project, crediting me or otherwise, go ahead. But if you really want to make a good game or project using tilesets? Just use gamemaker. It's free, undertale was made in it.