[ Quoting Robert Whittemore to All about 'Duke Nuke 3d codes' ]
 RW> Anybody have any codes besides
 RW> DNKROZ,DNSTUFF,DNITEMS,DNHYPER,DNCLIP,and
 RW> DNCASHMAN?
 RW> Robert
Duke Nukem 3D - Cheat Codes (042696) v1.3
-----------------------------------------
For Duke Nukem v1.3D - SHAREWARE
  (* = new/changed code)
  dnkroz      - Toggle GOD Mode / Unlimited Jetpack
  dncornholio - Toggle GOD Mode / Unlimited Jetpack
  dnstuff     - All items, weapons, ammo, keys
 *dnscotty### - Warp to level ### (i.e. E1M1 = 101, E1M12 = 112)
 *showmap     - Shows entire map in map mode
  dnclip      - No-Clipping mode (walk through walls, crashes game)
 *dnmonsters  - Type in once to make all monsters disappear.
                Type it again to make them come back.
  dnskill#    - Change skill level
  dnview      - "You're too good to be cheating!" / Change View, like F7
  dnitems     - Get all inventory and keys
 *weapons     - Get all weapons/ammo
 *inventory   - Get all inventory
 *keys        - Get all keys
  dnhyper     - Unlimited Steriods
  dnrate      - Frame rate information
 *debug       - Some debug information
 *coords      - Displays your current coordinates
  dncashman   - Throws cash out, just for looks
  dnbeta      - "Pirates Sucks!"
 *dntodd      - "Register Cosmo Today!"
  dnallen     - "Buy Major Stryker"
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