Is that where characters in the story "level up" like in a role-playing game? Heard a friend mention the genre...
Just finished Gerry Lopez's excellent Surf Is Where You Find It. Gerry was perhaps the most iconic surfer in the early 70's. Fifty years later, he's still surfing, snowboarding, and doing yoga at a high level. The book is a collection of short stories about other legendary figures in the surfing world, and his own pioneering experiences traveling the world — he also does a nice job of attributing dumb luck and providence for being alive.
Not every story is amazing, but enough of them are, and his own world-class surfing is captured with such grace, that it would be a shame for a surfer to not read through it.