If you like jigsaw puzzles, this is the site to visit. The program slices up a picture into pieces, and lets you put it together. You can even upload your own photos to be made into puzzles.
This site hosts a large collection of Flash games of varying quality and of various genres. Users can rate games, and contests are available, as are leaderboards for those wanting to track their scores in comparison to others.
A nation-builder, this one set in a fantasy medieval world. Explore the world, amass resources, and war with your neighbors in real-time to acquire land and honor.
Basically an online Renaissance Faire, this game does its best to replicate life in early modern Europe. Be a peasant, a lord, a politician, or an innkeeper, and everything in between.
Relive the halcyon days of the Apple II with this browser-based repository of games like Sherwood Forest and Oregon Trail. It may be necessary to download a plug-in for your browser to make it work, however.