Sure, but if the intent of a game you've constructed is to turn an ordinary activity into a scored competition, accidentally instead creating some specialized t

Sure, but if the intent of a game you've constructed is to turn an ordinary activity into a scored competition, accidentally instead creating some specialized thing that veers far away from the original activity is a failure (and is very likely—this is basically the construct-a-perfect-wish-for-a-genie problem). The only reliable way to counteract it is with a heavy subjective component to judging—the more objective the outcomes, the more distorted the activity will tend to become.