Doors
- A1 : Ceiling Door
- A2 : Floor Door
- A3 : Split Door
B : Horizontal Doors
- B1 : Star Trek Door
- B2 : Split Star Trek Door
- B3 : Sliding Door
D : Special Doors
- D1 : Teeth Door
- D2 : Rotating Door
- D3 : Open Door Room Lights
- D4 : Close Door Room Lights
- D5 : Touchplate Door
- D6 : Locked Door
- D7 : Switch-Operated Door
- D8 : Combination Switch-Operated Door
- D9 : MultiSwitch-Operated Door
- D10 : Convex Door
- Automatic Closing Doors
A : Vertical Doors
Parallaxing
Lighting
- C1 : Flickering Lights
- C2 : Flickering Lights when Shot
C : Flickering Lights
Horizontally Moving Sectors
- B1 : Subway Vehicles
- B2 : Two-Way Train
- Pigcop RPV
A : Stretching / Shrinking Sectors
B : Locator Paths
Vertically Moving Sectors
- A1 : Elevators
- A2 : Switch-Operated Elevators
- A3 : Locked Elevators
B : Ceilings and Floors
- B1 : Raising and Lowering Ceilings/Floors
- B2 : Incrementally Raising and Lowering Ceilings/Floors
- B3 : Ceiling Falls when Triggered by Explosion
A : Elevators
Rotating Sectors
Teleporters
- A1 : Teleporter
- A2 : Silent Teleporter
- A3 : One-Way Teleporter
A : Teleporters
Water
- A1 : Water
- A2 : Submergible Water
- A3 : Submergible Water with Sloped Underwater Surface
B : Special Water Effects
- B1 : Rising Submergible Water
- B2 : Rising Submergible Water on Sloped Surfaces
- B3 : Waves
A : Water and Submergible Water
Demolition
- Explosives
A : Explosions
- A1 : Blastable Walls
- A2 : Ceiling Explosions
- A3 : Destructable Buildings
- A4 : Activated Explosions
SFX
- A1 : Activation Sounds
- A2 : Ambient Sounds
- A3 : Echo Effect
- A4 : One-Time Sound
- A5 : Wall-Activated Sounds
- A6 : Staged Sounds
A : Sound Effects
Walls
- A1 : Masked Walls
- A2 : One-Sided Masked Walls
B : Wall Effects
- B1 : Breakable Glass
- B2 : Mirrors
- B3 : Forcefields
- Wall Information
A : Types of Walls
Sprites
- A1 : Security Cameras
- A2 : Collapsable Sprites
- A3 : Pool Table
- A4 : Lightning and Rain
- A5 : Cranes
- A6 : Active Tripbombs
- Exploding Helicopter/Car
- Demo Cameras
- Mode-Specific Sprites
- Mini-Bosses
A : Sprite Effects
General Effects
- A1 : Sector-Over-Sector
- A2 : Secret Places
- A3 : Conveyor Belts/Water Current
- A4 : Earthquakes
- A5 : Automatic Shooters
- A6 : Ventilation Shafts
- Forcing the Player to Start Weaponless
A : General Effects
Ending Levels
Tricks
- A1 : Sector-Over-Sector Water
- A2 : Transparent Water
- A3 : Version 1.3d One-Way Teleporter
- A4 : Switch-Activated Slopes
- A5 : Enemy Effects
- A6 : Three-Level Elevator
- A7 : Reflective Sprites
- A8 : Reflective Floors
- A9 : Ladders
- A10 : Simulating 3D Objects
A : Tricks