
Because Sonic games have always been developed by the studio, the stages in the game appear to have been adapted from past Sonic games. In contrast to other Mega Drive games, platforming segments in this game are extremely slow. There are numerous references to previous games in the series as well as bosses and locations from previous installments in the game. Using the Hedgehog Engine, Sonic Team created a high-definition replica of the most well-known parts of the franchise. The game, developed by Sonic Team, was released by Sega. Download play is a feature of the Nintendo 3DS that allows players to share digital content with each other without the need for each player to have their own copy of the content. The 3DS version of Sonic Generations features download play, which allows up to four players to play the game together using only one game cartridge. However, the 3DS version was criticized for its camera angles and framerate issues. The game received generally positive reviews from critics, with praise directed at its level design, graphics, and audio. The 3DS version of the game uses the system’s stereoscopic 3D to give the player a “true sense of speed”. A port for the Wii U was released in October 2012.

Sonic Generations was released in November 2011 for Microsoft Windows, PlayStation 3, Xbox 360, and Nintendo 3DS. The game features levels from various Sonic the Hedgehog games, but is primarily set in Green Hill Zone from the original game. Classic Sonic is based on his appearance in the original 1991 Sega Genesis game, Sonic the Hedgehog, while Modern Sonic is based on his more recent 3D appearance in Sonic the Hedgehog (2006). Sonic Generations is a platform game in which players control the anthropomorphic blue hedgehog Sonic the Hedgehog in two forms: Classic and Modern.
