Fitocracy
What if fitness could be a game? This is the question behind Fitocracy, an interactive, online game meant to improve real physical fitness. While users play, they are tracking progress and competing against friends. Fitocracy believes making fitness more fun and game-like will make it easier to achieve real results.
Users log their activity, for which they receive points that allow them to "level up" and rise up the leaderboard. Users can also receive Achievements and unlock Quests.
Finally, users can add tags to their profiles to describe themselves and find people like them (e.g. SF, Skiing, Sailing).