I learned that (just as Sheldon Cooper of The Big Bang Theory once said) the human brain is the most powerfull graphics processor there is.
Old games were very limited in terms of resolution and what kind of graphic effects were possible with the hardware at the time. Those games were still very immersive. Most of them still are. They trigger your imagination and you brain fills in the gaps.

One example where this became very obvious to me is The Secret Of Monkey Island and the Special Edition with enhanced high resolution graphics. I still prefer to play it with the classic graphics, because in my mind those pixels look different "in reality" than what the new artists made of it.

"Ken sent me" always works ;)

Very much agreed. Also, notice how, as the player's imagination gets more involved in visualizing the game, the more the game touches the player. Think also about books: there the visualization is 100% yours, and that is what makes you more involved of all media.

Turning it off and on again usually works lol

I have learned that there is more to war than just gundpowder and guns (think War in the East) and that it takes more to rule than just will and charisma (any 4X or Civ. game with politics involved).

I'm fond of the original Witcher.

Because I played the Polish dub with English subtitles, I learned a lot of basic Polish like "dziękuję" (thank you) and "do widzenia" (goodbye).

Geralt was usually a polite teacher of the language, but of course even his naughty words were quite educational.

I was playing Styx: Master of Shadows and I was stuck in a room because I was constantly trying to solve it the same way. A guard on a higher vantage point kept spotting me as I was disposing of his two comrades. Avoiding his gaze could be achieved if only I could drag one of the bodies fast enough over the edge into a pit. I tried plenty of times, failing enough to get frustrated.
You can probably already tell how insane my actions were, doing the same action over and over expecting different results.

That's where it hit me, why not do it completely differently this time. There are several routes in this area, I can't get to the guy that spots me because on the way there the other two guards will notice me. Lets find a different route, dispose of the mate who has been foiling my plans and then repeat what worked from the previous run. It worked and I had more fun.

Suddenly I realized how wrong my approach to games in general was, it was an epiphany. If you fail try smarter, not harder. This realization extended into several others. If you fail, don't try to get a different result by doing the same thing. Give yourself a chance to play imperfectly. The point isn't to 'win', it's to be better than when you started. I was playing for a long time and realized that after a certain point I wasn't enjoying myself so setting up a gaming time of 45 min worked great.

Applying the things that I learned from that session helped me a lot in improving the quality and quantity of my work. The results were immediate. It also helped me to enjoy other games more.

VIdeogames has given us this sage piece of advice.

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

First of all, to read more in English with video games that do not have a Spanish version.
Secondly, when I was playing RPG as a kid, I realized that in some places it was cheaper to get some items than in others, so I always went to certain stores when I had to buy something. In real life I do the same when I have to go buy food and other products, discovering where it is cheaper for me.

Just recently I learned from TIS-100, that the difference between two values is inverted if the values are exchanged. In other words: a-b=c and b-a=-c. That gave my restricted mental math skills a nice boost :)

Apart from that, Grim Fandango opened a whole new fascinating world for me in terms of mexican/aztec culture.

I got my first interest in software development from games, while I was more interested in what I could do with it and never considered going into game design, I have been continuously been inspired in my endeavors.
My problem solving skills have been honed by games requiring abstract thinking.

A lot! From good old games I've learned to be:
• Adventurous – from Tomb Raider
• Brave – from Medal of Honor
• Cooperative – from Lost Vikings
• Decisive – from Command & Conquer
• Entrepreneurial – from Capitalism
• Focused – from Comanche
• Glowing – from Fallout
• Handsome – from Larry
• Industrious – from Settlers
• Irrational – from Monkey Island
• Just – from Blade Runner
• Joyful – from RollerCoaster
• Knowledgeable – from Deus Ex
• Logical – from Incredible Machine
• Mystical – from Myst
• Noble – from Majesty
• Organized – from Airline Tycoon
• Questioning – from Planescape
• Quiet – from Thief
• Precise – from Freespace
• Respected – from Gangsters
• Sociable – from Sims
• Thorough – from Opus Magnum
• Unstoppable – from Panzer General
• Vigorous – from Prehistoric
• Wise – from Civilization
• Youthful – from LittleBigPlanet
• Zealous – from Populous

I learned the true meaning of "catharsis" by playing games like Postal 2 or Soldier of Fortune. When you are frustrated, angry, anxious or simply disappointed by people in real life, just run a violent game and release the pressure. Explode some knees with a shotgun, decapitate heads with a shovel, mutilate bodies with a knife... and take a breath !

No, I didn't forget to take my pills ! I don't need them anymore since my electroconvulsive therapy !

I've learned from Lara Croft that a bunny is the best stuff to make a pistol suppressor.

Recently, during an especially stressful time, I learned from Firewatch to pause, breathe, and enjoy silence when you can find it. Also to treasure the real conversations you have. If I was younger I might have learned not to be such a dick to my ex. Sadly, that ship has sailed.

I already own about half the games on the list, (ps, it's a really good list!) if I'm honored to win, and get a game I already have, I'd be happy to gift it to the next person down the list.