Keep up man, Atari is a subsidiary of Hasbro who also own WotC, and has the exclusive license to all D&D products on any computer platform.
Atari is not a subsidiary of Hasbro. Atari is owned by Infogrames.
Infogrames bought Hasbro's video game subsidiary, Hasbro Interactive in 2001. In 2005, Hasbro bought back the digital gaming rights for their properties from Atari for $65 million. In the deal, Atari/Infogrames acquired a 10 year exclusive deal to produce video games based on 10 key Hasbro franchises, including Dungeons & Dragons.