Thus, games may be dominated by teenagers. Games may have ruling bodies but this too is not a necessary requirement. Thus, games do not require a professional level. Games may have the drinking of beer as their ultimate goal. Golf is a a game because anyone who says that Tiger Woods isn't trying to beat the crap out of Fuzzy Zoeller is as ludicrous as anyone who doesn't realize by now that figure skating is an activity.
Games are more significant than activities but less significant than sports.
An activity by definition is anything that is not a sport or a game and is therefore less significant than the others. Activities frequently employ judging that determines the ultimate winner. Thus, the results are subjective and generally highly-questionable. Some activities serve no real purpose other than creating a demand for beads and sequins. It is common for activities to be dominated by teenagers and children.