GameFAQs - PC

General information, codes, reviews, and FAQs.
http://www.gamefaqs.com/computer/doswin/

World of Free Games

Database of patches, briefly reviewed freeware and shareware, and related links. All files hosted off-site.
http://www.worldoffreegames.com/

Tucows Games Software

Demos, shareware, and freeware.
http://games.tucows.com/

GameSpy PC

Offers news, reviews, previews, screenshots, downloads, and a message board.
http://pc.gamespy.com/

Gem's Games

Freeware, shareware, and abandonware. Includes capsule reviews and related links.
http://gemsgames.game-point.net/

FiringSquad

News, reviews, information, and help for games and gaming related hardware.
http://www.firingsquad.com/

Gamez.com - PC Games

Searchable list of titles with information and links for each.
http://gamez.com/sage/games.x?p=pc

Voodoo Extreme

Information on 3D acceleration hardware, games and related material.
http://ve3d.ign.com/

GamingMoz - PC

Release data, box art, cheats, and forums.
http://www.gamingmoz.org/games/p48/pc/