1.as you find area where a search pointed might be it should be marked in some way.
2. Instead of find as many as you cna in 60 seconds go to level systems with increasing quota of points to be find in each level
3. Maybe adding two points at the same time form some point. liek if you find 10 points next thing you get two points at the same time.
4. mixed feelings about finding pixel. on the one hand it gives you this feeling of searching needle in the desrt on the other instead of going point! found! next one! you are screwing with your mouse to hit right pixel because its not as precise as it should be.
5. Maybe changing of colour of searcher as you go nearer the target
Just random ideas.
good art (reminds of pipboy form fallout )