I just uploaded Synergy the other day, and am really happy with it. It's a Columns or Puyo Puyo styled arcade puzzle game, with OpenGL rendered falling pieces and backgrounds. It turned out great and I'm excited to start doing updates, so figured I'd promote it a bit here. =)

Web page: http://www.kittehface.com/p/synergy.html

Market link: market://details?id=fishnoodle.synergy