This is the main way I used to play Minecraft in the Beta days, thanks!
Notch (the creator of minecraft) was angry someone was posting his game online for free. He emailed the owner, Dylan, of the site threatening legal action.
Instead of going down a legal route, Dylan challenged him play a game of quake3 to settle the dispute.
If notch won, Dylan would take the site down. If Dylan won, notch would would leave him alone and let him keep hosting the site.
Notch agreed, won the match, and Dylan followed the promise and took it down forever!
Small correction, Dylan always planned to take the site down. They were playing for Minecraft capes[0] for him and his two teammates. The original livestream of the match is still up on Twitch also.[1]
[0] Cosmetics that used to be very rare and only given out by devs or at MineCon