Explorer

After attempting to simulate orienteering with The Forest, Graham Relph takes
things a step further by creating a game-world with no fewer than 4 billion
locations.

These are drawn in considerable detail, and viewable from 2 different modes,
as you fly (viewed from above) or walk (viewed panoramically). The task is to
locate 9 objects, and you do this by flying close enough to one that a beacon
is activated, to which will direct you to it. You must then find a patch of
clean land to land on, and then get close by walking to it. Occasionally you
will encounter robotic bugs to kill.