Winter!: Prepare for holiday gaming!
Since this game is free DLC, there's no box or CD case and it doesn't have a loading screen or a usable logo, so I took a screenshot of the game surface. It works for Solitaire and Freecell.
The website in the corner is a leage of players who used to use this software to play M:tG on line. They have help files, links to download the software and an IRC channel for finding opponents.