THe only thing that I don't like about this game is the sticky movement. My arrow keys stick weird and it isn't sensitive enough so I am having to press them hard and repeatedly to move. Fix that and 5/5, as for now 4/5.
The defining factor for the ball's ability to change is that they have to be touching an "infected" ball with the mouth on it.
I really liked this game, very addictive...5/5
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