Valve Community

GameStand.Net covers Source mods. In addition it also covers free games ans UT2004 mods.

Level Architect is the personal portfolio of Anthony Nichols.

HL2 Mods is a Russian site that covers HL2 mods. It is also the home of Dmitriy Masalcev AKA Diolator, maker of Slums 2.

Old Screenshot

Dabu presents his portfolio on this, his personal site. It includes his released maps and projects he is working on.

Nana’s Paradox covers Source games and runs articles and news about maps and mods.

The Sven Co-op Map Database is exactly what the title suggests; a database of maps for Sven Co-Op.

Thinking With Portals is a website dedicated to Portal and its custom maps.

Games On Net is a gaming portal for an Austrailian ISP. It covers lots of games, and has active forums.

TotalHL.hu is a Hungarian Half-Life portal.

Mods Online is a news and community forum, with a very active user base.

L4D Maps is a website completely dedicated to Left 4 Dead and everything about it.

Gaming.Fi is a Finnish website covering plenty of games other than Valve’s games. It features plenty of updates and an active forum.