This is the UltimaProtos nuclear explosion.
Synopsis: I am developing a weapon pack for Unreal Tournament (yeah, the first UT
), and it's called Nali Weapons 3.
The pack is almost finished and has over 14 weapons, and some of them are of mass destruction like this one.
And right here, I present you the actual effect in-game, the exact raw screenshot of the explosion, with just some text thrown in.
Once released anyone can see it live in the game.
Thanks Epic for creating such a good game and engine.