Collect as many points as you can in a limited time. You will have a few randomly generated zones shown on the map. You'll need to get as close to the center of these zones as fast as possible and claim them by selecting the zone marker to get more points.

Selecting a zone marker will always remove that zone and and replace it with a new one in a random location. The locations are chosen to be between a configurable minimum and maximum distance from your current location.
If you are within the zone when you select the marker you will receive points based on how close you are to the center and how long ago the marker was created. If you are outside the zone then you will lose points based on how long ago the marker was created (very old markers will cost less points to replace).