IceQuake is now closed. Actually, it was closed last year, but now you have an official closure announcement on the website.
We have moved on to other things, and since the downloads host was closed a long time ago, the site is pretty much useless.
Thanks for sticking around! If you're interested, check out the creators' personal websites! Links down below.
If you're looking for VDU guides and tools, they are now back under the valvedev.info domain!