HEY. Did you know I have a Patreon page that funds fun projects like this? Throw in a buck.

UT99/emscripten

A few warnings:

• This is a 100 to 200 megabyte download, depending on what compression your browser supports, in case you want to back out now.
• This is known to work on: Firefox, Google Chrome (desktop), Google Chrome (recent versions of Android), Microsoft Edge (Windows 10 Creators Update or later), Safari (desktop, 10.1 or later; works on iOS in modern times, too).
• This is known NOT to work on: Microsoft Edge before the Windows 10 Creators Update, Internet Explorer.
• This is just the intro flyby to show it works. The whole game is not included because it's a big download and not mine to give out.
• Since there are files missing, the main menu crashes if you try to start a game. This is known.
• The framerate could be much better with a rewritten renderer, but right now it's using the original fixed-function OpenGL code here.
• This was built with Emscripten, SDL2, and Regal.
• This wasn't done by Epic Games, and no one is selling/shipping/supporting this. It was just for fun. Don't bother Epic about it.
• Did you know that the latest Unreal Tournament game is being developed as free-to-play open source? Check that out here!
• Want to buy the real, native version of this game? It's for sale on Steam and GOG.
• You can find me on Twitter: @icculus.

--ryan.