Geograph - photograph every grid square

Turfgame is played using mobile phones. You can walk or cycle between zones and you must stand within the zone for around 20 seconds to claim the zone. There is an online scoreboard that is reset back to zero on the first Sunday of the month. You cannot reclaim the same zone within 23 hours unless another player visits the claimed zone after 20 minutes have elapsed. You then can reclaim the zone after another 20 minutes have elapsed.

Turfgame started in Scandinavia and is now played in eleven countries. In the UK, Edinburgh is a hot spot for the game.