V21 is the shortcut to call for a medic in Wolfenstein Enemy Territory

ATH1 ATH0

In NFS Underground 2, if you place an empty file named “FOOBAR” with no extension in the game directory, you can bypass disk verification and the game just launches.

C9 means RET

Don't remember if any other titles used it, but BARACUDA on Sonic 3D Blast on Genesis/Mega Drive for level select.

Not sure if it works for the other versions or on any of the collection games it's included in, though.

?TJL-BDFW-BFGV-JVVB (enables cheats in Doom 64)

RRTANGENTABACUS

I know it primarily as a cheat code in Star Wars pod racer on N64, but I've seen it in other games too, and even referenced in different non-gaming contexts. I still don't really know what it means.

When I was a kid I remembered it as "RR-Tan-Genta-Bacus". It wasn't until decades later I realised it is real words "tangent", "abacus".

The idqdd for the game ChexQuest (which ran on that engine) was "charlesjacobi". I assume this was a dev's name.

UUDDLRLRBA

hold L2+R1 and press X square R2 L1 circle x square square square

unlocks all levels in the ps1 game Bugz bunny: lost in time

281-330-8004 hit Mike Jones up on the low cos Mike Jones is bout to BLOW!

left-jump-left-1P-left-fire_bubble-left-1P

I know most sanitary fittings machining dimensions by heart. Engineer drawings are for pussies.

CTO4, SAP VC characteristics transaction code