Quantum

From Black Castle Software:

Quantum is a remake of an arcade game from 1982, created by General Computer Corp. for Atari.In this game you need to capture subatomic particles that are flying around. You control your own particle of sorts which leaves a tail. When you form a loop with your tail it creates a net for a split second. Any particles that are caught in that net will be captured. You can earn extra points by catching multiple particles in one swoop. If you touch a particle, however, you will die.There are also bonus particles which cannot kill you but you can still capture for points, you do not need to capture these to move on to the next level.