For a bit over a year, I’ve been addicted to the online version of Ticket To Ride (from Days of Wonder), which was originally a popular railroad board game, but has a free online version as well.
While you can play the web version for free, you get certain additional perks by buying a 1 year ‘web card’ for ~$20, and also by buying the CD-ROM version (also ~$20, though they sent me one free last year as an early purchaser of a web card).
Anyways, they’ve just updated the CD-ROM version to include several new variants, based on their board game expansion pack ‘USA 1910′. If by chance you have the CD-ROM version of the game, you can now download the updates, and even if you’re only playing the web version, you can play the new variants, if someone with the CD-ROM version starts a 1910 game.
And, for the ~95% of you who don’t know what I’m talking about, I strongly encourage you to try the game – again, it’s free to try. I’ve possibly spent more time playing this game in the last year than any other computer game I’ve played, including Civilization and SimCity.