Basically the same thing as Metroid Alternate Engine test, but with my map generator added to it. Using it can allow you to make any tile in its costumes, and then use it by putting it into the list. Because of the way I made it, There can be a total of exactly 1000 possible blocks that you can add and use. Also, look inside!
PLEASE NOTE THAT IT ( THE RED BLOCKS ) LOOK UGLY BECAUSE THEY ARE JUST A TESTING BLOCK!!! You can make blocks that are as nice as you want.