Heres how to make an extra ball :)
1.Fork "Everything" and name the ball whatever you want
2.Replace the tag "ball25" With any "ball__"
3.Replace the rule "When this collides with tag #ball25" with "When this collides with tag #ball__"
4.Go to "Everything" and replace the rule "Create Paul Infront of all actors tell the created actor: nothing" with "Create _____ Infront of all actors tell the created actor: nothing"
5.Go and Style the ball appearance with whatever you want
Once you did this you can do it again :D