Mod Websites (for the Source engine)

• Black Mesa -A total conversion mod of the original Half-Life game updated for Source!
• Half-Life 2 Short Stories -A mod consisting of short sp maps that tell a much larger story.
• Subvertus -You play as John Hayes, a rebel, in an complementary side-quest to HL2.
• Zombie Panic Source! -A multiplayer mod where humans face zombies in a spooky-themed atmosphere.
• Awakening -You are Colonel Shepard sent to destroy Combine in a variety of new and interesting ways.
• Coastline to Atmosphere -Literally you play from the coastline to the atmosphere! Very long; VERY good!
• Combine Destiny -You guessed it; you are a Combine soldier working with a squad to fight the rebellion!
• Combine Destiny 2 -The story continues! New models, new HUD, new sounds, -what more do you want?
• Half-Life 2 Infiltration -An alternative storyline with interesting gameplay and well-built levels.
• Half-Life 2 Wars -Imagine Half-Life 2 as an RTS and you have Half-Life 2 Wars!
• Minerva -One of the most well-done singleplayer experiences for HL2. If you wanna see it done right...
• A Frayed Stich in Time - A very good SP mod. A bit on the difficult side if you're looking for a challenge.
• Antlion Troopers Deuce - Get ready to defend 'till your heart's content an onslaught of antlions.
• Mistake of Pythagoras -I dare you to find a more crazy and inventive singleplayer mod for Source!
• Rock 24 -A really well-done singleplayer experience rivaling that of Valve's work!
• Shanty Town -A different kind of 3rd person adventure game. -Very creative setting.
• As I Lay Dying -A promising mod project being undertaken by one man. -It's not finished last I checked...
• Dark Source - A high production sp mod set to scare your pants off! I'm waiting for this one.
• The Citizen - This action-driven (rather long) SP mod has turned into one of my favorites; very well done.
• MORE WILL BE ADDED...

Portfolios (fellow game designers and artists)

• Aaron (aaron_da_killa) Zimmermann
• Abe Robertson
• Adam Engels
• Adam Foster
• Alex Allen
• Alexander Roycewicz
• Alistair McNally
• Carlos Montero
• Chuckie Wilson
• Creating Worlds
• Daniel Junek
• David Johnston
• De Lannoit Jessy
• Duncan Blair
• Emil (Pingu) Fridell
• Jason (Generalvivi) Mojica's Blog
• Jason (Generalvivi) Mojica's Portfolio
• Jeff Smith
• Jeroen 'Forceflow' Baert
• Johnathan Welsh
• Kim Dahlgren
• Mario Notaro
• Marmalade People
• Matthew Kapfhammer
• Nathan Ayres
• Nick Baysingar
• Richard Acherki
• Robert Jørgensgaard Engdahl
• Robert Yang
• Soenke C. Seidel
• Spencer Rose
• Thomas Heß

Game Editing/ Art Communities

• ConceptArt
• DevBump
• Digital-Tutors
• Editlife
• Facepunch
• Gamasutra
• Gamedev
• Gamedevmap
• GameFlood
• Halflife2.net
• HL2 Mods
• HL2 World
• Interlopers
• IWannaMap
• Lanmaniax
• MapCore
• MappersNation
• Planet Phillip
• SDKnuts
• SnarkPit
• SP-Mods
• ThinkingWithPortals
• Valve Developer Community
• MORE WILL BE ADDED...

Game Editing Tools/ Software Downloads

• Cannonfodder's Tools -A Source mapper's essential toolbox for working with models and custom content.
• Crazy Bump -Almost essential for those wanting to make some crazy normal maps for their textures!
• DispEd -A program that gives the ability to create impossible shapes with displacements for Hammer.
• Gameplay Notation -Gives you a different way of thinking about gameplay when building your next level!
• Optimization Guide -Please read this if you feel 'uncertain' about anything related to optimization!
• Partners in Rhyme -Looking for royalty-free sound effects? -Look no further!
• Shrinker -Not a tool, but a work-around to that pesky 'low-res' effect in the 3D view of Hammer.
• Terragen -The best free heightmap generator around; hands-down!
• Textures! -A link to a whole mess of links of free texture resource sites!
• Twister -A third party application that allows you to do some cool effects with displacements in Hammer!
• MORE WILL BE ADDED...