It's either the release date of 2012 orit's the fact that the game supports 12 languages :D

Gracias ^_^

Google is mans best friend, and not only for the men, but for the women and children too...:

According Wikipedia there a quite a lot of significant 'fun' going on for June 12:

910 – Battle of Augsburg: The Hungarians defeat the East Frankish army under King Louis the Child, using the famous feigned retreat tactic of the nomadic warriors.
1240 – At the instigation of Louis IX of France, an inter-faith debate, known as the Disputation of Paris, starts between a Christian monk and four rabbis.
1381 – Peasants' Revolt: In England, rebels arrive at Blackheath.
1418 – Armagnac–Burgundian Civil War: Parisians slaughter Bernard VII, Count of Armagnac and his suspected sympathizers, along with all prisoners, foreign bankers, and students and faculty of the College of Navarre.
1429 – Hundred Years' War: On the second day of the Battle of Jargeau, Joan of Arc leads the French army in their capture of the city and the English commander, William de la Pole, 1st Duke of Suffolk.
1550 – The city of Helsinki, Finland (belonging to Sweden at the time) is founded by King Gustav I of Sweden.
1653 – First Anglo-Dutch War: The Battle of the Gabbard begins and lasts until June 13.
1665 – Thomas Willett is appointed the first mayor of New York City.
1758 – French and Indian War: Siege of Louisbourg: James Wolfe's attack at Louisbourg, Nova Scotia commences.
1772 – French explorer Marc-Joseph Marion du Fresne and 25 of his men killed by Māori in New Zealand
1775 – American Revolution: British general Thomas Gage declares martial law in Massachusetts. The British offer a pardon to all colonists who lay down their arms. There would be only two exceptions to the amnesty: Samuel Adams and John Hancock, if captured, were to be hanged.
1776 – The Virginia Declaration of Rights is adopted.
1798 – Irish Rebellion of 1798: Battle of Ballynahinch.
1817 – The earliest form of bicycle, the dandy horse, is driven by Karl von Drais.
1864 – American Civil War, Overland Campaign: Battle of Cold Harbor: Ulysses S. Grant gives the Confederate forces under Robert E. Lee a victory when he pulls his Union troops from their position at Cold Harbor, Virginia and moves south.
1898 – Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
1899 – New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
1914 – Massacre of Phocaea: Turkish irregulars slaughter 50 to 100 Greeks and expel thousands of others in an ethnic cleansing operation in the Ottoman Empire.
1935 – A ceasefire is negotiated between Bolivia and Paraguay, ending the Chaco War
1939 – Shooting begins on Paramount Pictures' Dr. Cyclops, the first horror film photographed in three-strip Technicolor.
1939 – The Baseball Hall of Fame opens in Cooperstown, New York.
1940 – World War II: Thirteen thousand British and French troops surrender to Major General Erwin Rommel at Saint-Valery-en-Caux.
1942 – Anne Frank receives a diary for her thirteenth birthday.
1943 – The Holocaust: Germany liquidates the Jewish Ghetto in Brzeżany, Poland (now Berezhany, Ukraine). Around 1,180 Jews are led to the city's old Jewish graveyard and shot.
1944 – World War II: Operation Overlord: American paratroopers of the 101st Airborne Division secure the town of Carentan, Normandy, France.
1954 – Pope Pius XII canonises Dominic Savio, who was 14 years old at the time of his death, as a saint, making him at the time the youngest unmartyred saint in the Roman Catholic Church. In 2017 Jacinta and Francisco Marto, aged 10 and 9 at the time of their deaths, are declared saints.
1963 – NAACP field secretary Medgar Evers is murdered in front of his home in Jackson, Mississippi by Ku Klux Klan member Byron De La Beckwith during the civil rights movement.
1964 – Anti-apartheid activist and ANC leader Nelson Mandela is sentenced to life in prison for sabotage in South Africa.
1967 – The United States Supreme Court in Loving v. Virginia declares all U.S. state laws which prohibit interracial marriage to be unconstitutional.
1979 – Bryan Allen wins the second Kremer prize for a man powered flight across the English Channel in the Gossamer Albatross.
1987 – The Central African Republic's former Emperor Jean-Bédel Bokassa is sentenced to death for crimes he had committed during his 13-year rule.
1987 – Cold War: At the Brandenburg Gate, U.S. President Ronald Reagan publicly challenges Mikhail Gorbachev to tear down the Berlin Wall.
1990 – Russia Day: The parliament of the Russian Federation formally declares its sovereignty.
1991 – Russians first democratically elected Boris Yeltsin as the President of Russia.
1991 – 1991 Kokkadichcholai massacre: The Sri Lankan Army massacres 152 minority Tamil civilians in the village of Kokkadichcholai near the eastern province town of Batticaloa.
1993 – An election takes place in Nigeria which is later annulled by the military Government led by Ibrahim Babangida.
1994 – Nicole Brown Simpson and Ron Goldman are murdered outside Simpson's home in Los Angeles. Her estranged husband, O.J. Simpson is later charged with the murders, but is acquitted by a jury.
1997 – Queen Elizabeth II reopens the Globe Theatre in London.
1999 – Kosovo War: Operation Joint Guardian begins when a NATO-led United Nations peacekeeping force (KFor) enters the province of Kosovo in Federal Republic of Yugoslavia.
2009 – A disputed presidential election in Iran leads to wide-ranging local and international protests.
2016 – Forty-nine civilians are killed and 58 others injured in an attack on a gay nightclub in Orlando, Florida; the gunman, Omar Mateen, is killed in a gunfight with police.
2017 – American student Otto Warmbier returns home in a coma after spending 17 months in a North Korean prison and dies a week later.
2018 – American president Donald Trump and North Korean chairman Kim Jong Un sign their first document at the North Korea-United States Summit held in Singapore.

Some of these are great moments, some are not, however they all are historical events.

Now, is the event you are thinking of among these, hmmmm....?

Thank you very much! ;)