upon its design, featuring some 3D effects such as hopping between the foreground and background, and the camera panning and curving around corners. Meanwhile, Pandemonium and Klonoa brought the 2.5D style to the PlayStation. In a break from the past, the Nintendo 64 had the fewest side scrolling platformers with only four; Yoshi's Story, Kirby 64: The Crystal Shards, Goemon's Great Adventure, and Mischief Makers—and most met with a tepid response from critics at the time. Despite this, Yoshi's Story sold over a million copies in the US, and Mischief Makers rode high on the charts in the months following its release. Third dimension The term 3D platformer usually refers to games with gameplay in three dimensions and polygonal 3D graphics. Games that have 3D gameplay but 2D graphics are usually included under the umbrella of isometric platformers, while those that have 3D graphics but gameplay on a 2D plane are called 2.5D, as they are a blend of 2D and 3D. One of the first platformers with 3D graphics was Sega's Congo Bongo in 1983. The first platformers to simulate a 3D perspective and moving camera emerged in the early-mid-1980s. An early example of this was Konami's platform game Antarctic Adventure, where the player controls a penguin in a forward-scrolling third-person perspective while having to jump over pits and obstacles. Originally released in 1983 for the MSX computer, it was subsequently ported to various platforms the following year, including an arcade version, NES, and ColecoVision. 1986 saw the release of the sequel to forward-scrolling platformer Antarctic Adventure called Penguin Adventure, which was designed by Hideo Kojima. It included more action game elements, a greater variety of levels, RPG elements such as upgrading equipment, and multiple endings. In early 1987, Square released 3-D WorldRunner, designed by Hironobu Sakaguchi and Nasir Gebelli. Using a forward-scrolling effect similar to Sega's 1985 third-person rail shooter Space Harrier. 3-D WorldRunner was an early forward-scrolling pseudo-3D third-person platform-action game where players were free to move in any forward-scrolling direction and could leap over obstacles and chasms. It was notable for being one of the first stereoscopic 3-D games. Square released its sequel, JJ, later that year. The earliest example of a true 3D platform game is a French computer game called Alpha Waves, created by Christophe de Dinechin and published by Infogrames in 1990 for the Atari ST, Amiga, and IBM PC compatibles. Bug!, a