That is the net game. Here are some tips:
- You shouldn’t close the net yourself - you should let go of the mouse to complete the shape.
- The net will fizzle out if it hits itself, if a dot crosses it, or if you let go without any dots being inside the net.
- The score per net is the number of dots caught, squared. The best way to score is to catch many dots at once.
- Dots appear and move somewhat randomly, so there is an element of luck.
- You can wait until you see a good situation to make the first capture and start the timer.