iFisherman - a game where you have to release the coastal zone from the various inhabitants of the ocean, to protect holidaymakers on the beach people.
You have to catch dangerous sea creatures surrounding them with nets, for which you earn points.
The volume of space that you can protect networks will decrease with an increase in the level that would complicate passage of a maximum number of points, as would be necessary to catch the maximum number of fish nets protecting the smallest in size space.