When making levels for Duke Nukem 3d the mapfaq is a must read.

Contents 1 DOORS 2 PARALLAXED SKIES 3 LIGHTING EFFECTS 4 MOVING SECTORS 5 GENERAL SECTOR EFFECTS 6 WATER 7 WALLS AND WALL EFFECTS 8 MIRRORS 9 TELEPORTERS 10 ENDING THE LEVEL 11 SWITCH EFFECTS 12 C-9 EFFECTS 13 SECTORS THAT RISE AND FALL 14 MUSIC AND SOUND EFFECTS 15 WORKING WITH SPRITES 16 MULTIPLAYER LEVEL MAKING 17 MISCELLANEOUS

DOORS Edit

• Regular DOOM-Type Doors
• Doors That Open From Ceiling To Floor
• Swinging Doors
• Swinging Glass Doors
• Problems and Fixes with Swinging Doors
• Sliding Star Trek Doors
• Splitting Star Trek Doors
• Teeth Doors
• Another Way To Do Teeth Doors
• Sliding Doors
• See Through Sliding Doors
• Horizontally Splitting Doors
• Rotating Subway Doors
• Making Doors Auto Close
• Making Locked Doors

PARALLAXED SKIESEdit

• Correctly Parallaxed Skies
• Problems And Fixes With Parallaxing

LIGHTING EFFECTSEdit

• Making Lights Blink
• Making Lights Blink When Shot
• Open Door And Room Lights Up
• Light Switches
• Colored Lights
• Pulsating Lights

MOVING SECTORSEdit

• Gears/Rotation
• 2-Way Trains (The Right Way to Make Them!)
• One Car Subways
• Multi-Car Subways

GENERAL SECTOR EFFECTSEdit

• Earthquakes
• Rooms Over Rooms
• Stretch Sector
• Conveyor Belts/Water Current
• Making Curtains Draw Back
• The Pool Table
• Fish Tanks

WATEREdit

• Water
• Sloped Water Sectors
• Swimming in Slime
• Making Waves
• The Rising Water Effect
• Level Over Level Water Trick
• Underwater Airlocks
• Making Water Rise On Sloped Surfaces

WALLS AND WALL EFFECTSEdit

• Masked Walls
• One-Way Walls
• Forcefields and Controlling Them
• Wall Information

MIRRORSEdit

• Mirrors
• Making Mirrors Show Bullet Holes When Shot
• Making the Two Way Mirror

TELEPORTERSEdit

• Teleporters
• Sewer Holes/Silent Teleporters
• One Way Teleporters (Plutonium Pak Required)

ENDING THE LEVELEdit

• Nuke Buttons
• Ending Sectors
• End Of The Level After The Sound Has Played

SWITCH EFFECTSEdit

• Switch Activated Doors
• Combination Door Switches
• Another Version of Combo. Switches (Plutonium Pak Required)
• Multi-Door Switches

C-9 EFFECTSEdit

• Fun With C-9
• C-9 Activated by Switches
• C-9 Activated by Touchplates
• Blastable Walls
• Fixing The 'Texture Problem'
• Making the Ceiling Blow Up (And Enemies Fall From the Sky!)

SECTORS THAT RISE AND FALLEdit

• Lifts
• Switch Operated Lifts
• Locked Lifts
• Elevator Transports
• Destructible Buildings/Floor Lowering
• Crushers (Engine Pistons)
• Explosion In Sector, Ceiling Comes Down
• Rotate/Rise Sector
• Ceilings And Floors (Dropping)
• Incremental Rising and Falling Sectors (Plutonium Pak Required)

MUSIC AND SOUND EFFECTSEdit

• Making Music and SFX Work
• Adding Your Own Music and SFX
• Echo
• Making Phones Ring

WORKING WITH SPRITESEdit

• List of Sprites Commonly Used
• Security Cameras
• Vents
• Collapsible Bridges/Bridges
• Demo Cameras
• Spawning Stuff
• Active Tripbombs
• Making the Mini-boss
• Exploding Helicopter/Car
• Cranes

MULTIPLAYER LEVEL MAKINGEdit

• DukeMatch/Co-op Starting Positions
• Making Items Appear ONLY In Multiplayer
• Making Duke TAG Levels

MISCELLANEOUSEdit

• Glass
• Secret Areas
• Shooters
• Difficulty Settings
• Signs That Fall When Shot
• Lightning and Thunder (Plutonium Pak Required)