There is a big difference between a set of laws or rules that functions as a blacklist vs. one that functions as a whitelist.

In a blacklist system, there are rules that tell you what you cannot do, but anything outside of those laws is permitted (i.e., the Air Bud scenario). In a whitelist system, there are rules that tell you what you can do, and anything outside of those rules is forbidden.

In spite of what Air Bud might have taught us, most sports and games are actually whitelist systems. There may not be a specific rule against having a golden retriever on the team, or against stripping naked in the middle of play, or against poking your opponents in the eye, but you'd still incur penalties, if not forfeit the game entirely, if you tried any of those things in football, or basketball, or chess, or the Kentucky Derby.

Conversely, most roleplaying games (and, thankfully, the legal systems of most countries), function as blacklist systems: anything not expressly denied is permitted. Arguably, I'd say that's the primary difference (from the citizen's perspective) between a permissive Utopian society and a despotic Dystopian society - not the number of restrictions or the quality of life, but the assumption of default guilt or innocence.