In the Nintendo history books that have already been written, and in more that will follow, Tetris inevitably get a prominent mention - its bundling with the Game Boy was an integral part of the success for both game and hardware. Its origins are from long before then, of course, and the game has had an interesting history in IP ownership and licensing.
It's still going strong, of course, with Ubisoft developing the most recent entries - Tetris Ultimate. The history of how this evolved from conceptual research in Russia to global video game smash hit is certainly intriguing.
Over the past weekend Did You Know Gaming? has given it the treatment, looking at its history, and you can check it out below.