Raph Koster – Designer Dragon – should be well known to all of you reading this; he was one of the minds behind the original design of Ultima Online, and devised many of the systems that the game continues to earn praise for to this day.
To celebrate the 20th anniversary of Ultima Online, Koster has been posting about his history with the game, mostly via Twitter:

The gap between the Atari 2600 & Ultima Online is the same as the gap between Ultima Online and today.

(can also sub Star Wars for Atari)

— Raph Koster (@raphkoster) September 24, 2017

Another bit of UO trivia: the boost it gave to now famous award-winning cartoonist @pvponline. This is a one-off strip he did for me. pic.twitter.com/lILRlma9fh

— Raph Koster (@raphkoster) September 24, 2017

It still hangs in my office. I featured as a dragon character a few times in the predecessor to PVPOnline, and Skull was born as a UO troll.

— Raph Koster (@raphkoster) September 24, 2017

Minor error — faulty memory? — the death of LB and the end of beta weren't the same event. We slaughtered players at both, but the beta

— Raph Koster (@raphkoster) September 25, 2017

had a whole storyline attached to it, which you can still find online. That's the one that ended up with demons everywhere.

— Raph Koster (@raphkoster) September 25, 2017

End of beta in UO, we had the world taken over by Shadowlords and utterly consumed by demons. It looked like this: https://t.co/H7C2LGlzVP

— Raph Koster (@raphkoster) September 25, 2017

Koster also penned a short reflection on the grandfather of modern MMORPGs on his blog:

Today marks the twentieth anniversary of Ultima Online‘s launch day.

Funny enough, I have no particular memories of that day.

I’ve written a fair amount about UO in the past, so I am at a bit of a loss as to what to say, other than “thank you” to the folks who hired me and let me work on it, and “thank you” to the players who played and continue to play it. It has been an honor.

Koster is also planning to write a longer article about UO, and is looking to the community for questions that he should answer therein:

Today is Ultima Online's 20th birthday. Send me questions! I'll answer them in a blog post today. #UltimaOnline #UOTURNS20 @UltimaOnlineEA

— Raph Koster (@raphkoster) September 24, 2017

The best way to send your questions to him would probably be Twitter; Koster tends to be very responsive on that platform. He’s already amassed a number of questions from people, but he’s open to more.