21 I'm a member of another forum that has a dedicated "forum games" forum that doesn't count in any way towards your stats. It's handy, people can play games for fun, and nobody is just trying to increase their post count. Dunno how they do it, though. Personally, I don't think it matters whether you have "the longest thread", "the most likes" Or "the most posts". If the content that you actually post in "proper" threads, is rubbish/rude/ignorant, the "most" of all those things isn't going to make me think any better of you.
Tldr: It's not a good idea to mistake high post counts etc. for intelligence/popularity etc.