Let’s take a peek.
Descriptions:
C3– “The story begins when a high school student named Haruaki Yachi receives a mysterious, super-heavy black cube from his father overseas. That night, harauki wakes up to a suspicious noise in the kitchen, and he discovers a “fully naked female thief of rice crackers.” The girl,Fear, is the first of several surprises that Haruaki receives.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=12992
Coppelion- “The story is set in 2036, after radioactive contamination from a nuclear accident has put Tokyo under a blockade. Three high school girls have been sent to this dead city. Thanks to genetic engineering, the three girls have been impervious to radioactivity since birth. They form a special forces unit, codenamed “Coppelion,” In the 3rd of Japan’s Ground Self-Defense Force.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=11859
Guilty Crown- “After the outbreak of the unidentified virus “Lost Christmas” in 2029, Japan has been under the control of a multi-nation organization called GHQ. Ohma Shu is a 17 year old boy who has a psychic power in his right hand. He can use the power “Ability of King” to extract tools or weapons from his friends. He has been avoiding making trouble for others but his life changes when he meets a girl Yuzuriha Inori, a member of a resistance guerrilla group called “Undertaker”, whose members pilot mecha weapons to fight against the government.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=13001
Chihayafuru- “Ayase Chihaya is a high school girl who dreams about her sister becoming the greatest fashion model in Japan…until she realizes that this dream doesn’t require her own involvement at all. After watching a classmate play the competitive card game karuta, Ayase decides to give the game a shot and build dreams for herself.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=12991
Mirai Nikki- “Loner Yukiteru Amano uses his cell phone to report everything that he sees to his imaginary pal “Deus Ex Machina.” One day, Deus talks back, launching Yuki into a deadly game— each player’s phone reports the future in exactly the style that the player would have written it, meaning that not everyone has complete information. Oh, and they’re all supposed to try and kill each other…the last player standing wins godhood.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=12896
Phi Brain- “kimi no puzzle- One day, Kaito Daimon, a high school boy who loves puzzles, and his childhood friend, Nonoha, decide to challenge the “unsolvable puzzle” hidden in the underground ruins near their school. This is the “Philosopher’s Puzzle,” a life-threatening game created by the mysterious think-tank known as “POG.” By obtaining what lay sealed within that puzzle, Kaito is chosen as a candidate to become a Phi-Brain (one who posses a “golden ratio brain”). Now, as a Solver (puzzle solver) he and his highly unique companions find themselves wrapped up in POG’s Puzzle Battles surrounding the Philosopher’s Puzzle.”
http://www.animenewsnetwork.com/encyclopedia/anime.php?id=12271