Nuclear Reaction is a fairly basic and simple game whose objective is to shoot as many nuclear particles as possible scattered through space, but you have to do it with skill and expertise, because you must try to cause a nuclear explosion in a chain, that is, the explosion in one, also exploit the ones closest to you, and in one shot eliminate the more the better.
But you have to be careful which particles you shoot, because in Nuclear Reaction the green and yellow particles explode when you shoot them, but the red ones if you shoot them by mistake will end up killing you, and therefore you must repeat that level again.
You can free download Nuclear Reaction 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.