Why are some turfs showing rivals and some aren't?
Turfly is both a fun competitive game and an interesting single player experience for tracking your movement over time. We have now enabled competition in all parts of the world, however you are only competing against those turfly users you have added as friends. That means you have to invite as many people as you can to make it competitive if that's the style of play you enjoy!
We've made it a bit easier by allowing you to add nearby turfers as friends - that should make it interesting! Hint: keep your avatar image friendly.