Sonic the Hedgehog Pocket Adventure
In August 1999, SNK announced that they were collaborating with Sega to develop a "Sonic the Hedgehog" game for their Neo Geo Pocket Color handheld system. The game was developed by SNK, with supervision from Yuji Naka and Sonic Team at Sega. This marked the first time Sega was directly involved in the development of a "Sonic" game for a non-Sega platform. The team planned for "Sonic Pocket Adventure" to be a return to the classic 2D gameplay style found in the "Sonic" games on the Sega Genesis. In particular, many game design and visual elements are borrowed from "Sonic 2". The game's background music tracks are also 8-bit renditions of music from "Sonic 3". "Sonic Pocket Adventure" was released first in North America on December 4, 1999. SNK released a system bundle with the game included for the holiday season. The game was released in Japan two weeks later, and in Europe in February 2000.
Sonic the Hedgehog (1991 video game)
"Sonic the Hedgehog" was praised by critics, with an 86% rating at the review aggregator GameRankings. It was considered Sega's answer to Nintendo's widely popular "Mario" series, as it was a platformer featuring the company's mascot. Paul Rand of "Computer and Video Games" compared the two in depth and characterized "Sonic the Hedgehog" as being faster, with brighter colors, and "Super Mario World" as having more "depth of play". Frank Ladoire of "" believed "Sonic the Hedgehog" was part of a new generation of games that demonstrate that the Genesis is capable of "beautiful things" in the technical department.