Hello!
I made an Opposites Bomb Game using the Kirby template, these are probably the most simple opposites you'll find as it's for a Middle School C Class.
I changed the points system a little, so instead of having to "collect" all the different Kirbys they just get points for the amount of Kirbys, dead easy.
There's a small introduction i made but i had to keep the language very simple!
Hope this helps!