Click 'See Inside' and remix/add the sprite to backpack. (PLEASE make sure to read the comments inside, they are very important!) Also, PLEASE remember that this is not meant to have costumes just slapped on. Put your own code in the correct areas.
Latest version of my worm engine! Just like 6 but with a better system for selecting spacing of worms, and without any example scripts, making it easy to just remix or add to backpack!