http://video.google.com/videoplay?docid=3340749730698873752&q=quakeworld

so how is it called, i like that you can see through teleporters, and effects look better, as far as i can see even gun textures are different (dont need em bu still...) ?

ezquake

hmmm, see through teleporters , is this allowed?

how do i get it? just make a transparent tele texture?

That's just movie effects. It's possible but most servers do not allow transparent teleports or water.

With ezQuake:

r_novis 1
gl_turbalpha 0.5
watervis 1

The server must also have watervis 1 for transparency to work.

You always can have transparency for spec/demo mode.
The commands to make it wasnt changed since 1999....