Qbert (ˈkjuːbərt; also known as Qbert) is an arcade video game developed and published for the North American market by Gottlieb in 1982. It is a 2D action game with puzzle elements that uses isometric graphics to create a pseudo-3D effect. The objective of each level in the game is to change every cube in a pyramid to a target color by making Qbert, the on-screen character, hop on top of the cube while avoiding obstacles and enemies. Players use a joystick to control the character. The game was conceived by Warren Davis and Jeff Lee. Lee designed the title character and original concept, which was further developed and implemented by Davis. Qbert was developed under the project name Cubes. Qbert was well-received in arcades and among critics. The game was Gottlieb's most successful video game and is among the most recognized brands from the golden age of arcade games. It has been ported to numerous platforms. The game's success resulted in sequels and the use of the character's likeness in merchandising, such as appearances on lunch boxes, toys, and an animated television show. The Qbert character became known for his "swearing" and "Qbertese sound" – an incoherent phrase made of synthesized speech generated by the sound chip and a speech balloon containing a grawlix that appear when he collides with an enemy. Because the game was developed during the period when Columbia Pictures owned Gottlieb, the intellectual rights to Qbert remained with Columbia, even after they divested themselves of Gottlieb's assets in 1984. Therefore, the rights have been owned by Sony Pictures Entertainment since its parent, Sony, acquired Columbia in 1989. Qbert appeared in Disney's Wreck-It Ralph franchise, under license from Sony, and later appeared in the film Pixels. Q*bert is an action game with puzzle elements played from an axonometric third-person perspective to convey a three-dimensional look. The game is played using a single, diagonally mounted four-way joystick.