Source: The New York Times
quote: HughesNet Gen4 service plans will work with many features offered through gaming services such as Xbox LIVE® and the PlayStation Network. You will be able to download games and game updates, and use the streaming video and music services offered through your gaming system, such as Netflix® and Hulu™. However, the majority of real-time, multi-player games that people play on Xbox LIVE and PlayStation will not work over any satellite Internet service. Strategy and "turn-based" games will work but games requiring a rapid response such as "first-person shooters" will be unplayable.
quote: With satellite service, the data must travel up to the satellite and back (about 45,000 miles). This round trip adds about a half-second delay to the total time your computer takes to communicate with a Website or host server. That will prevent real-time, multi-player games from establishing or maintaining a reliable connection with the gaming server.