Wiki pages
- Tutorial: Models and lighting
- Tutorial: Modifying the HUD
- Tutorial: More Complex Triggers
- Tutorial: Mortar Madness
- Tutorial: Multi_manager
- Tutorial: Multi_manager Looping Made Easy
- Tutorial: Multisource
- Tutorial: New Glass
- Tutorial: Non-coding workarounds for your mod
- Tutorial: NPC Scripting Basics
- Tutorial: Palette.lmp file (To do - not yet written)
- Tutorial: Perfect Timing with Doors
- Tutorial: Permanently locked doors
- Tutorial: Physics in Source
- Tutorial: Pointfiles
- Tutorial: R_Speeds
- Tutorial: Radar locations in Counter-Strike: Source
- Tutorial: Rain
- Tutorial: Random entity triggering
- Tutorial: Re-texturing Models
- Tutorial: Realistic Shadows
- Tutorial: Recompiling light only
- Tutorial: Reducing Clipnodes with zhlt_usemodel Templates
- Tutorial: Render Properties
- Tutorial: Rescaling Prop Models
- Tutorial: Retina Scanners and Other NPC-Only Locked Doors
- Tutorial: Rope, Waterfalls and Dripping Water
- Tutorial: Rotating Billboards
- Tutorial: Scripted Sentences
- Tutorial: Scripted Sequences
- Tutorial: Scripting with sequence files
- Tutorial: Seamless Skybox Fog
- Tutorial: Security Cards
- Tutorial: Separate Player and Monster Hivehand damages
- Tutorial: Setting up a Mod: Addendum
- Tutorial: Setting up a Mod: Part 1 - Custom Game feature
- Tutorial: Setting up a Mod: Part 1 - Mod directory and liblist.gam (Steam)
- Tutorial: Setting up a Mod: Part 2 - Splash Screens
- Tutorial: Setting up a Mod: Part 2 - Splash Screens (Steam)
- Tutorial: Setting up a Mod: Part 3 - Game Strings
- Tutorial: Setting up a Mod: Part 3 - Game Strings (Steam)
- Tutorial: Setting up Crowbar for Half-Life/GoldSrc
- Tutorial: Setting up TrenchBroom for GoldSource games
- Tutorial: Setup Guide: Counter-Strike
- Tutorial: Setup Guide: Hammer
- Tutorial: Similar to the effect of gradient transparency
- Tutorial: Skewing textures in Hammer
- Tutorial: Sound Effects for Textures (materials.txt)
- Tutorial: Soundscapes
- Tutorial: Source Custom Materials