It is about saving all the nanites, with the use of the laser that is activated by clicking the mouse on a sphere.
If it collides with a good (green) nanit it will be destroyed, although some are more resistant
If it collides with an enemy nanit (red) it will split into two of the good type, although some are more resistant.
Use the laser to separate spaces between two spheres of the same color
Up to level 2 you can only use celestial energy from then on you can use yellow energy.
With the mouse wheel you can increase the zoom of the microscope on your screen to see better and moving the mouse moves the screen.
Computer Controls:
Mouse left click to make the laser cut
Mouse wheel to zoom in or out.
The less time you can reach 0 enemies with the least amount of nanites eliminated, is better.

NaniVerse