The Mirage Site
The Mirage Site is a puzzle game with lasers, mirrors, and color filters. Different colors of laser have different effects.
There are 3 large areas of puzzles, one area has challenging puzzles that focus on each color effect: red, green, and blue. The borders of the puzzles can sometimes be broken, creating additional meta-puzzles to find bonus stars.
These color-beam mechanics were later recreated in Roody:2d. Roody:2d also adds unique mechanics to yellow, cyan, and magenta beams.
Walkthrough
Spoilers, obviously
Minecraft Version: 1.20.2
If you squint, you might recognize the red, green, and blue lasers as the laser, funnel, and lightbridge from Portal 2.