
The story of No Game, No Life centers around Sora and Shiro, a brother and sister whose reputations as invincible NEET hikikomori gamers have spawned urban legends all over the Internet. These two gamers even consider the real world as just another "crappy game." One day, they are summoned by a boy named "God" to an alternate world. There, God has prohibited war and declared this to be a world where "everything is decided by games" - even national borders. Humanity has been driven back into one remaining city by the other races..... but now they will have 2 secret weapons. "Well, let's start playing"
There are Light Novel at Baka-Tsuki (partially translated)
There is an ongoing manga (translated in your usual online reading sites)
and now there is an ongoing anime, first EP is out, second one will be aired in 2 days
I personally find this story AWESOME..... great characters, great premise, great artwork and the "game fights" are mind-boggling (seriously, the second real battle bring out NUCLEAR AND ASTRONOMICAL PHYSICS! O_O )
The protagonists:
Sora, older brother, 18-years-old virgin, an utter failure in normal life but incredible at reading peoples and finding out-of-the-box solutions.... Put him in front of a challenge and he turns into Lelouch ON STEROIDS....
Shiro, younger sister, 11-years-old supergenius, fluent in 16 languages, inhuman mathematical/logical capabilities resulting in her actually SOLVING CHESS!
Stephanie Dora, 18-years-old beautiful young noble, grandchild of the last Human King, despite being not so good at games and having lost her chance to become queen she desperately wants to save humanity. She almost immediately meets the sibling, and a battle with Sora will utterly change her life.... causing her to become the chew toy of the terrible duo

Oh, and if you think the 2 NEETS have the usual looks of shut-ins, think again.... especially in the manga! Shiro is the living dream of any lolicon/siscon and Sora often looks like a freaking Vampire lord! Stephanie..... she is the embodiment of cute 'n sexy..... i've been in love with her from the beginning.... :derp: