See : QuakeWorld and the famous Bunny-Jump. 

HERE are 4 servers if you want to try it.

PS: If you fear using URLs, I cannot do anything for you.

o>

I am focusing on the site functions and of course my GitHub repositories and projects. Still looking for financements and going through some difficulties, the 3D printing service is temporarily paused.

Check that poster representing the possibilities with 3D printers ! Thank you FormLabs.

You can get it in high definition here.

I am pleased to introduce 2652 True-type fonts with a 3D preview OF ANY TEXT (clic on the viewer and edit the example).