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This is a simple and complex puzzle game about light.
You need to use Optical components to direct lights and lit up the rings.

Characteristics of light:
● Light travels in a straight line
● Accordant with the Fresnel reflection
● Accordant with the principle of three primary colors
● Light travels at 299,792,458 m/s

Function of Optical components:

Mirror - to reflect light

Converter - to change the frequency of light and hence change its color

Filter - Can only be passed through by the light of the same color

Prism - to divide or gather light (not optical dispersion)


The ring will be lit up when light of the same color passes through.
You solve the puzzle by lighting up all rings.



After you solve the puzzle, the distribution of the performance of the community (number of prisms they use) will be shown to you.
You can choose to optimize your solution or move on.

Game control:

Left mouse button - to pick up or put down the component
Mouse wheel - to rotate the component or turn pages
Right mouse button - to delete the component

R - Reset
Z - Undo

Number - to pick up the component
Space - to switch the component
Arrows - to rotate the component or turn pages