Thought I might as well post this here as it's almost sort of making you guys unemployed. 
 
I made some "80s arcade tribute" speedmaps with jump'n'run, pac-man, space shooter and shooting gallery-type gameplay using just stock Quake code and a few hacks. Apparently people find the maps to be just as frustrating as real arcade machines.
 
Download:  + 
So... time for a proper arcade mod! 
 
CocoT: Cool. Note that my moonbase map has some multiplayer settings too, though it'll probably suck as I didn't know back then how you would implement this mode.