Creating a VR game that your friends and family can play? Adding an API to React that shapes the course of frontend development for millions of people?
Of course in the end it turned out you could clip out of the world by summoning your horse in a doorway - but not by running into a wall, no siree not on my watch.
Did you know it was the first ever game where the in-game billboards for each player were auctioned dynamically? A complete auction took place in less than the time it took to draw one frame on the screen! I wish I could show you the game itself - such a pity they decommissioned the servers 15 years before you were born.