Question: Which game did the author of the e-book "How to Win at the Sport of Business" play for charity at Intel Extreme Masters Season X – San Jose?
Context: Intel Extreme Masters Season IX – World Championship Mark Cuban (born July 31, 1958) is an American businessman, investor, author, television personality, and philanthropist.  He is the owner of the NBA's Dallas Mavericks, co-owner of 2929 Entertainment and chairman of the AXS TV.  He is also one of the main "shark" investors on the ABC reality television series, "Shark Tank".  In 2011, Cuban wrote an e-book, "How to Win at the Sport of Business", in which he chronicles his experiences in business and sports. San Jose Earthquakes are an American soccer club founded in 1994 as the San Jose Clash after the city of San Jose was awarded an inaugural Major League Soccer (MLS) franchise.  San Jose began playing competitive soccer in the 1996 season.  It plays its home games at Avaya Stadium, competing in the Western Conference of the MLS.  The current San Jose Earthquakes is the second soccer team from San Jose to bear the "Earthquakes" nickname.  The tradition was started by San Jose's North American Soccer League team in 1974 who carried the name until the team folded in 1988.  The current San Jose Earthquakes is an entity distinct of this club, and hosted the first ever MLS game on April 6, 1996, against D.C. United.  In 2005, the then owner of the Earthquakes, Anschutz Entertainment Group, announced plans of the team relocating to Houston due to failing efforts to secure a soccer-specific stadium in San Jose.  The organization in Houston would be considered an expansion team by the league, eventually being known as the Houston Dynamo, who began play in 2006.  The Earthquakes returned after a two-year hiatus, resuming play in 2008. Intel Extreme Masters Season X – Cologne (or IEM Cologne) was an esports event held at the ESL Arena in Cologne from 18-20 December 2015.  There was only a tournament for "League of Legends". The San Jose Municipal Stadium, or Muni Stadium in common usage, is the home of the minor league baseball San Jose Giants, the Advanced A league affiliate of the San Francisco Giants located in San Jose, California.  The Giants play in the northern division of the California League.  The stadium is also home to the San Jose State University Spartans college baseball team for some regular season games (other regular season games are played across Alma Avenue at Blethen Field).  The local high school baseball divisions also use Municipal Stadium as their championship field.  The stadium also hosts concerts, weddings, dog shows, and many other local events.  In the past Muni Stadium has been the home field for the San Jose Owls, San Jose Red Sox, San Jose Pirates, San Jose Missions, the San Jose Bees, and the San Jose Expos. The Intel Extreme Masters (IEM) are a series of international eSports tournaments held in countries around the world.  These Electronic Sports League (ESL) sanctioned events, sponsored by Intel, include events in "Starcraft II", "", "Quake Live", "League of Legends" and "".  The body that owns the league is Turtle Entertainment.  The League has existed for ten seasons as of 2016.  The season ten tournament finals took place in Katowice, Poland.  Previous events have been held in Chengdu, Dubai, Hanover, and Los Angeles, among other cities. Intel Extreme Masters Season X – San Jose (IEM San Jose for short) was a video game esports tournament occurring on November 21–22, 2015 in San Jose, California, US.  It was the first tournament of 10th season of the Intel Extreme Masters and featured "League of Legends" and "" tournaments.  There was a combined $175,000 USD prize pool across both games.  In the case of the latter it was the first "Counter-Strike" event an IEM since IEM Season VI in 2012.  Mark Cuban and Brian Krzanich played a charity celebrity exhibition match of "League of Legends" benefiting the The Cybersmile Foundation. Intel Extreme Masters Season IX was the ninth season of Intel Extreme Masters competitions organized by Electronic Sports League, and took place between July 2014 and March 2015.  The season included five stops in different cities around the world acting as qualifiers before culminating in the World Championship in Katowice, Poland.  The featured games were "League of Legends" by Riot Games and "", as well as one competition of "", both by Blizzard Entertainment. Natus Vincere (Na'Vi) is an eSports organisation based in Ukraine with teams and players competing in "", "Dota 2", "FIFA", "World of Tanks" and "League of Legends".  Their "Counter-Strike" team was the first in history to win three major tournaments—Intel Extreme Masters, Electronic Sports World Cup, and World Cyber Games 2010—in one calendar year.  Their "Dota 2" team also won the inaugural 2011 edition of The International "Dota 2" Championship. Intel Extreme Masters Season X – World Championship
Answer: League of Legends