What? No mention of any of the original DOOM series?
No particular order (because that would be WAY too hard!)
Doom/Doom II
Quake/Quake II
Mortal Kombat II
Myst
Wolfenstein (!!)
I know theres more guys here besides me in their mid-late 20s that spent hours on end with these classics when they first came out
The Street Fighter and MK franchises were really the only Coin-ops that I ever really got into...and I drooled over the BEAUTIFUL PC versions that were beyond superior to any of the home consoles!