As a kid, you probably played a game called “Connect Four,” where you drop your colored cylinder into a slot with the goal of connecting four pieces. This “Four in a Row” game is played in much the same way, with one big difference. Neither side’s pieces are colored, but are instead clear acrylic disks.
As shown in the video below, once a disk is dropped into a slot, the game recognizes this and lights it up in your color. It’s programmed to recognize and highlight a win, and even allows you to reposition a disk if you make a mistake. If that weren’t enough, when the game is not being played, it acts as a customizable scrolling text display.
As you probably know, this isn’t the only thing that can be made out of acrylic and RGB LEDs. The Est store also lists in “Interactive light effect tower,” which appears to be fun for all ages. The light pattern can be changed via three infrared sensors, and it can act as a three-dimensional audio view meter.