Some ways to watch streamed football games online are at sling.com and NFLstreaming.net. There is a charge associated with sling.com, but it is available on your tablet, phone, television or computer.
NFL.com also features Game Pass, which allows fans in the United States and Canada to listen to radio broadcasts of all NFL games live or watch on-demand replays of every game played since 2009, including Super Bowls. Users cannot stream games in real time with Game Pass, but they can access the games on-demand after they have aired live.
There is a charge associated with sling.com and NFL.com; however, both are currently offering free trials, as of November 2015.