Invented by Cambridge mathematician John Conway, the Game of Life is a cellular automation game that is a zero-player game. The evolution of the cells is determined by the initial conditions of the cells.
You have 16 LEDs that you need to solder into the PCB.
LEDs are polarized, so it is important that you insert them correctly. The longer lead on the LED is the "+" lead. The shorter lead, also the side with the flat spot on the LED's case, is the "-" lead.
Insert all of the LEDs in, and solder them in. Once they are all soldered, clip their leads.