The 10th Anniversary for the Dreamcast has renewed interest in the console, so a few developers have taken the opportunity to release New games for it.
1. DUX. a new Shooter-http://www.hucast.net/
2. Wind & Water Puzzle Battles. a game ported and improved from the GP2X portable-http://www.wind-water.net/
3.Irides, a Lumines clone-http://www.goatstore.com/Products/Sega/Dreamcast/?product=372075
4.Last Hope;Pink Bullets-a remake of the 2007 game Last Hope-http://www.youtube.com/watch?v=hlIjjVnrarY
5.Rush Rush Rally Racing, a New Top Down racer that was in production for over 2 years. a 4 player Micro Machines on steriods game that is a blast to play-http://www.senileteam.com/rushrushrallyracing.html
Dreamcast-18 years later "It's Still Thinking"