YI meaning in Computing ?

Super Mario World 2: Yoshi's Island is a 1995 platform game developed and published by Nintendo for the Super Nintendo Entertainment System (SNES). To reunite baby Mario with his brother Luigi, who has been kidnapped by Kamek, the player controls Yoshi, a friendly dinosaur, through 48 levels while carrying Baby Mario. As a Super Mario series platformer, Yoshi runs and jumps to reach the end of the level while solving puzzles and collecting items. In a style new to the series, the game has a hand-drawn aesthetic and is the first to have Yoshi as its main character. The game introduces his signature abilities to flutter jump and produce eggs from swallowed enemies.

The game has a unique visual style, which heavily contrasts with the pre-rendered visuals of contemporary games popularized by Donkey Kong Country. After four years of development, Yoshi's Island was released in Japan in August 1995, and worldwide two months later. Some of its special effects were powered by a new Super FX2 microchip. The game was ported to the Game Boy Advance with few changes in 2002. This version was rereleased for the Nintendo 3DS in 2011 and the Wii U Virtual Console in 2014. The original version was also released for the Super NES Classic Edition in 2017 and Nintendo Switch Online in 2019.

Yoshi's Island received acclaim and sold over four million copies. Reviewers praised the art, sound, level design, and gameplay, and posited Yoshi's Island as a masterpiece and one of the greatest video games of all time. The game brought newfound renown to both Yoshi as a character and Shigeru Miyamoto's artistic and directorial career. The distinct art style and Yoshi's signature characteristics established the Yoshi series of spin-offs and sequels.