Try Uglies Series by Scott Westerfield:
Tally Youngblood is about to turn sixteen, and she can't wait for the operation that turns everyone from a repellent ugly into a stunningly attractive pretty and catapults you into a high-tech paradise where your only job is to party. But new friend Shay would rather hoverboard to "the Smoke" and be free. Tally learns about a whole new side of the pretty world and it isn't very pretty. The "Special Circumstances" authority Dr Cable offers Tally the worst choice she can imagine: find her friend and turn her in, or never turn pretty at all. The choice Tally makes changes her world forever.
…………………………………..
You might enjoy Divergent by Veronica Roth:
In Beatrice Prior's dystopian Chicago world, society is divided into five factions, each dedicated to the cultivation of a particular virtue--Candor (the honest), Abnegation (the selfless), Dauntless (the brave), Amity (the peaceful), and Erudite (the intelligent). On an appointed day of every year, all sixteen-year-olds must select the faction to which they will devote the rest of their lives. For Beatrice, the decision is between staying with her family and being who she really is--she can't have both. So she makes a choice that surprises everyone, including herself
………………………………….
Or perhaps Unwind, by Neil Shusterman:
The Second Civil War was fought over reproductive rights. The chilling resolution: Life is inviolable from the moment of conception until age thirteen. Between the ages of thirteen and eighteen, however, parents can have their child "unwound," whereby all of the child's organs are transplanted into different donors, so life doesn't technically end. Connor is too difficult for his parents to control. Risa, a ward of the state is not enough to be kept alive. And Lev is a tithe, a child conceived and raised to be unwound. Together, they may have a chance to escape and to survive
……………………………………..
I haven't read Enclave by Ann Aguirre yet, but I hear it's good:
In Deuce’s world, people earn the right to a name only if they survive their first fifteen years. By that point, each unnamed ‘brat’ has trained into one of three groups–Breeders, Builders, or Hunters, identifiable by the number of scars they bear on their arms. Deuce has wanted to be a Huntress for as long as she can remember. (full description here
http://www.goodreads.com/book/show/7137327-enclave) …………………………………….
You might like Legend by Marie Lu:
What was once the western United States is now home to the Republic, a nation perpetually at war with its neighbors. Born into an elite family in one of the Republic’s wealthiest districts, fifteen-year-old June is a prodigy being groomed for success in the Republic’s highest military circles. Born into the slums, fifteen-year-old Day is the country’s most wanted criminal. But his motives may not be as malicious as they seem.
From very different worlds, June and Day have no reason to cross paths—until the day June’s brother, Metias, is murdered and Day becomes the prime suspect. Caught in the ultimate game of cat and mouse, Day is in a race for his family’s survival, while June seeks to avenge Metias’s death. But in a shocking turn of events, the two uncover the truth of what has really brought them together, and the sinister lengths their country will go to keep its secrets.
………………………………………..
Some other good ones that I don't have room to describe include:
Incarceron, by Catherine Fisher
Uglies by Scott Westerfeld
Matched, by Ally Condie
.......................................…
Some dystopian classics include:
Battle Royale by Koushun Takam (VERY similar to Hunger Games, some people say Suzanne Collins took a lot of her ideas from Battle Royale, which was published before Hunger Games )
http://en.wikipedia.org/wiki/Battle_Royale 1984 by George Orwell:
http://www.amazon.com/1984-Signet-Classics-George-Orwell/dp/0451524934 The Handmaid's tale by Margaret Atwood:
http://www.amazon.com/Handmaids-Tale-Margaret-Atwood/dp/038549081X The Giver by Lois Lowry:
http://www.amazon.com/Giver-Lois-Lowry/dp/0440237688