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Rocksteady Games released the grittiest Batman game to date, Batman: Arkham City.
The world's largest Legoland theme park opened in Winter Haven, Florida.
Apple co-founder founder Steve Jobs dies.
Dark Souls, the second Souls game after Demon's Souls, was released for PS3 and Xbox 360 in North America.
American spy thriller TV series 'Homeland' first aired on Showtime.
The US military policy "don't ask, don't tell" came to an end.
Occupy Wall Street movement begins.
The movie 'Drive,' based on James Sallis's novel, was released in the US.
Officers closed a highway in Alberta, Canada, after a truck carrying 104 beehives overturned.
Singer legend Amy Winehouse was found dead at her home in London, England.
Lone wolf extremist goes on a massacre in Norway.
NASA's space shuttle program finally came to a close when mission STS-135 landed.
Marvel's superhero movie 'Captain America: The First Avenger' hit the theaters.
The British newspaper, News of the World, published its last-ever edition following a phone-hacking scandal.
South Sudan becomes the youngest country in the world.
The Space Shuttle Atlantis launched for its final mission.
'Harry Potter and the Deathly Hallows – Part 2' premiered in London.
'Somebody That I Used to Know' by Gotye featuring Kimbra was released.
NASA's Endeavour Space Shuttle landed for its 25th and final time.
Germany abandons nuclear energy.
Oprah Winfrey aired her last show.
NASA launched the Endeavour Space Shuttle on the penultimate space shuttle mission.
The FBI's most wanted man, Osama bin Laden, was killed by the US Navy Seals and CIA operatives in Abbottabad, Pakistan.
Prince William and Kate Middleton tied the knot.
An EF4 multiple-vortex tornado destroyed areas of two major Alabama cities: Tuscaloosa and Birmingham.
The Voice, a reality singing competition television show, premiered on NBC.
NetherRealm's Mortal Kombat, the first game in the franchise reboot, was released for PS3 and Xbox 360.
After hyping the game up for years, Valve finally released Portal 2 for PC, PS3, and Xbox 360.
Game of Thrones premiered on HBO.
The movie 'Thor' premiered in cinemas in Sydney, Australia.
The Australian boy band 5 Seconds of Summer formed.
15,899 lives were lost after a severe 9.0 magnitude earthquake occurred in Japan.
Space Shuttle Discovery completed its last-ever mission and made its final landing onto Kennedy's runway at 11:57 am EST.
185 people are killed during an earthquake in Christchurch, New Zealand.
Green River serial killer pleads guilty to 49th murder.
5 Seconds of Summer member Luke Hemmings posted his first YouTube video.
Myanmar's first elected parliament in half a century convenes.
The Egyptian government shut down 88% of the internet across the country.
The 2011 Egyptian revolution began after years of police brutality and corruption.
Estonia joined the Eurozone and adopted the Euro as its currency.
The 'Don't Ask Don't Tell' policy was repealed.
Street vendor Mohamed Bouazizi self‑immolates in Tunisia, igniting the Arab Spring.
Last episode of "Larry King Live" aired.
SpaceX became the first private company to launch, orbit, and recover a spacecraft.
A first edition of 'The Birds of America' by John James Audubon was auctioned at Sotheby's, London, England, for £7,321,250 ($10 million) – which took the record for any book at auction.
British singer-songwriter Adele released her hit single 'Rolling in the Deep.'
Harry Potter and the Deathly Hallows – Part 1, based on J.K. Rowling's 2007 fantasy novel, was released worldwide.
Sebastian Vettel became the youngest Formula 1 World Champion ever by winning the last race of the season in Abu Dhabi.
Taylor Swift's third studio album 'Speak Now' was released. It won Billboard's 2011 Album of the Year.
All 33 miners trapped after a mining accident in Chile were rescued after being stuck underground for 69 days.
