Here is the submissions for cats in Scratch's RNG! All the instructions should be in there, just remix the game and post it in the studio. https://scratch.mit.edu/studios/34987005/
By the way, if you want to make a really cool cat but it doesn't fit in the box, you can remove the info and rules. Make sure to put the info and rules in the instructions though or we won't have much to work with.
