FreeArcade.com
FreeArcade.com has over 150 free online games with no log-ins and no signups. New games and contests are added every week.

MSN Gaming Zone
With over 12 million users currently registered, MSN’s Gaming Zone is the biggest resource of its kind on the Internet. There are over 111 free games available to play with choices that include action, adventure, arcade, simulation and strategy games.

dosgames.com
Over 500 DOS freeware/shareware games, with downloads, reviews, screenshots, links, free email, and much more. Games include action, arcade, classic, puzzle, shooting and 3D.

Play Online For Free
Play Online For Free is a site where you’ll find over 3,000 free flash arcade games. Game categories include Action Games, Arcade Games, Casino Games, Fighting Games, Puzzle Games, Shooting Games and Sports Games.

Get Game Free
At Get Game Free there is a range of over 300 free online games for you to play. The game categories include action/adventure, sports, puzzle, and shhot ‘em up.

dot 3D Games
Here you can play 3D games online for free. The games are listed in six categories, namely arcade games, shooting, racing, sport, adventure games and puzzle games

Arcade Dome
At Arcade Dome you can find tons of great online flash games to play, all selected for their quality. New games are added on a regular basis.

Puzzle Online
Here you can download free multiplayer games that you can play without any limitations. Multiplayer games are games that can played by a number of people either against or in cooperation with each other. This can be done by sharing the same keyboard but also by using a modem or the internet to establish a connection. All the games at Puzzle Online have internet multiplayer support.