We shouldn't count this game that helped ease the mainstream into gaming as a hobby in the top lists because I don't agree with the perfectly sensible rubric that's the unwritten standard in "qualifications for a good game,"
I'd say in the classical oldskool Nintendo game design philosophy, Tetris is pretty close to perfect. The premise is simple. The game is simple. But the factors that make it harder are based on the player's reflexes and hand eye coordination and nothing super cheap or left field. Mechanics aren't introduced midway through, there's no winning class or ability set up that you'd be an idiot not to use. It's a pure, quintessential GAME that is appealing in part BECAUSE of how mundane it is. Like a plain salted kettle cooked potato chip. Mmm, tastes like corrugated cardboard and sweat, but fuck me if I can walk away from a bag.
If the argument moved on to "there should be a more strictly enforced standard for these top 100/10/5 Lists," then I'd be willing to listen, but the elephant in the room is really
Who fucking cares?
Also, I fucking hate Tetris.