IdleQuest
I've been working on IdleQuest for about a year. It's a from-the-ground-up recreation of the 1999 classic, EverQuest. It features a custom real-time MMO server built in Go, a very thoroughly implemented web client, and the classic UI recreated in React. I spent hundreds of hours meticulously scraping, cleaning, and organizing original data and graphics, and there's still a lot of work to do. But I've had a lot of fun with it and have had a lot of people enjoy it so far. https://idlequest.net