OlmiChess
OlmiChess is a Pocket PC program for those, who are tired of playing with an emotionless computer intellect. This game opens the new boundaries for you, allowing you to compete with hundreds of other real chess-lovers through the Internet, using a popular public server FICS (Free Internet Chess... There's players' rating available, you can even watch and analyze other people's games, as well as continue an interrupted game, if you like. ... What makes it even more convenient is that any kind of Internet connection is supported.
http://olmichess.com/files/OlmiChessSetup.zip - 110Kb - Download - Screenshot

IRC Baloney
Based upon the popular board game, Balderdash, IRC Baloney brings all the fun and hysterics to your IRC #channel. Try it once and you'll be convinced this is a must need addition to your gaming collection.
http://www.jasoncox.ca/ircbaloney.exe - 2Mb - Download - Screenshot

Network SpeedCard
Network SpeedCard is a simple dual-player card game that is played over a LAN, or peer-to-peer linked pair of PCs that have the TCP/IP protocol configured. The game can also be played over the Internet but given that speed is of the essence, network lag may give the player hosting the game an...
http://www.declan-software.com/binaries/nscsetup.exe - 653Kb - Download - Screenshot

CardGameCentral Games
FREE card games, board games, and dominoes including canasta, spades, euchre, pinochle, checkers, and more. Play with or without internet, online against people or robots. Famous for having thousands of types of each game. Both single deck and double deck pinochle, cut throat euchre, both US... Full scoring charts and large sized cards and graphics make it ideal for learning and those with minor vision problems. ... Clean and supervised chat rooms keep things friendly and make it easy to always find people to play against in the lobby.
http://canasis.com/download-online-games/canins18.exe - 8Mb - Download - Screenshot

100% Free Gin Card Game for Windows
Discard and Knock your way to win! Discover the most realistic game of Gin Rummy available. Learn basic play and strategy in our tutorial. Improve your skills using unlimited hint, undo and replay. Play Gin Rummy your way with hundreds of game options at your fingertips. ... com Internet lobby. ... Whether you are an expert or beginner, their knowledge of the game and never-ending charms will keep you entertained for years to come! ... Now includes 100% Free Gin toolbar to make Internet searches faster than ever!
http://dqsoft.com/download/Install-Gin-Free.exe - 5Mb - Download - Screenshot

Two Handed Net Spades
Play Two Handed Net Spades against a challenging computer opponent or against a real opponent on a network. For network play you can use The Windswept Game Network to find other players on the internet, or connect directly to another computer on a closed network in your home or office. ... The Windswept Game Network allows you to easily find other players on-line to play with. ... The game keeps track of your wins and losses, and your rating for network games. ... For public tables you can set a skill level that your opponent must have in order to join your table.
http://http://windsweptsoftware.com/dl/2hspade3.exe - 2Mb - Download - Screenshot

ChessRally
Play chess with new and old friends alike over the Internet, your local network, through Email (correspondence games), or play against several challenging computer opponents. Meet up with people and make new friends in the Online Rally Rooms (a chat and game service) to chat, play, or just be a... This download of ChessRally contains both the Free Edition, a free full-featured email chess game, and the Gold Edition with all of the other features mentioned above, which you get to try for free for 15-days.
http://www.chessrally.com/downloads/chessrally2.exe - 12Mb - Download - Screenshot

100% Free Cribbage Card Game for Windows
Race to the finish with this classic! Discover the most realistic game of Cribbage available. Learn basic play and strategy in our tutorial. Improve your skills using unlimited hint, undo and replay. Play Cribbage your way with hundreds of game options at your fingertips. ... Now includes 100% Free Cribbage toolbar to make Internet searches faster than ever! ... com Internet lobby. ... Whether you are an expert or beginner, their knowledge of the game and never-ending charms will keep you entertained for years to come!
http://dqsoft.com/download/Install-Cribbage-Free.exe - 5Mb - Download - Screenshot

Beat Ball 2
Beat Ball 2 is the long awaited sequel to the popular Break-out / Arkanoid style game Beat Ball. This time the game is packed with 60 original levels and supports virtually unlimited number of levels that you can download off the internet or create yourself in the included level editor. ... Download and give it a try, it's only 5mb =) Features + Advanced Break-Out style game + Play up to 4 players + Moving, falling and animated block features + Creatures affecting game play in different ways + Plenty of PickUps for modifications + High quality graphics and sound + Supports very high...
http://www.imphenzia.com/games/files/bb2/BeatBall2.zip - 5Mb - Download - Screenshot

Five+
Five+ is a simple and yet extremely addictive puzzle/strategy game with nice graphics. It is even simple for kids to learn and has yet enough strategy to keep adults entertained for hours. The object is to line up five or more pieces of the same color. ... The game's attractive graphics look best in high color or true color modes, plus nice sound effects (which may be toggled off) are built-in. ... Play Five+ on your own or use the unique Internet gaming mode to compete with thousands of other Five+ players from all over the world at the same time.
http://www.five-plus.com/downloads/fivep.exe - 1Mb - Download - Screenshot