TSG is a gaming group that hosts charity events throughout the year playing different series each marathon for many different charity organizations. Since 2008 they've held over 30 main marathons raising nearly $500,000.
 
The Sonic marathon has started and you can check it out below: Watch live video from TheSpeedGamers on www.twitch.tv

Donation link: http://donate.thespeedgamers.com/?eid=546e571018794