My avatar: this is the rocket celebration cut scene from NES Tetris
(NES=Nintendo Entertainment System, the original Nintendo from the 80's)
999,999 is the highest score you can get. The score counter "maxes out" at this point.
In 2003, I first heard about players who had "maxed out" the score counter at 999,999 on NES Tetris. It became my goal to do this, too. I practiced and practiced, plugged away at it, and the best I could ever do was 663,637 in July 2006--and I only got that after being stuck at 622,363 for three days shy of a year.
I never entirely gave up, but I just couldn't beat that score. I played less and less frequently, discouraged. Where I started out playing it a few times per week, I fell off to a few times per month, and eventually only a few times per year. By 2010, I wasn't playing at all anymore.
I kept a record of my high scores, I wrote them down on a wooden board which I called my "Tower of Power". At one point I wrote on it (paraphrased, because I wrote it in pencil and now I can't quite read it anymore), "This is what should be written on my tombstone. It perfectly sums up my life: I tried so hard to achieve something and forever fell short."
Well, in November of 2011, I saw a trailer for a documentary called "Ecstasy of Order: The Tetris Masters". It was about people like me, who were dedicated to mastering NES Tetris (in fact some of them I knew from an old Tetris message board I frequented 2002-2006). Needless to say, it reignited my passion, and I began to pursue my goal with fury.
Luckily, this time around, I learned that my understanding of the "physics" of how my pieces shifted left and right had been fundamentally flawed. I discovered the true nature of rules of auto-shifting and finally started down the road of true mastery.
On December 2, 2013, more than ten years after I began my quest, I achieved a high score in Tetris of 999,999 points.
Only twelve other people in the world had done this before me.
Here's the video
A little background info: a "Tetris" happens when you clear four lines at once. A Tetris is worth 36,000 points on Level 28, and it's the only scoring move that matters (clearing less than four lines does not give any significant amount of score). At 230 lines, you transition to Level 29, which is unplayable (a killscreen).
At 229 lines, one line away from the killscreen, I was still one Tetris away from maxing.
The video link jumps in right at the end of the game, right before the max happens, but the whole game is there if you care to see how I got there
The Tower of Power: