Production of the game began in 1994, during which Naughty Dog expanded its number of employees and invented a development tool called Game Oriented Object Lisp, to create the characters and gameplay.[16] Cartoonists Charles Zembillas and Joe Pearson were recruited to create the characters of the game, which resulted in the titular character Crash Bandicoot. After 14 months of development, the game was shown to Sony Computer Entertainment, who then signed on to publish the game. Crash Bandicoot was shown to the public for the first time at E3 and went on to become one of the highest-selling titles for the PlayStation console, selling over 6.8 million copies.[2]