Sonic Rivals

Sonic Rivals is a game in the Sonic series, developed by Backbone Entertainment exclusively for the PlayStation Portable. This is the first Sonic game to be developed by a Canadian company, and the first to be released on the PSP.

It features 2.5D gameplay, as players scramble to reach the end of a level before the other players do (whether they are computer-controlled or live opponents). It otherwise plays very much like the older titles in the series.

Coming in the holiday of 2007, Sonic Rivals 2 will be released for PSP, featuring Tails, Espio and Rouge, 150 more collectable cards, and new play modes.

Sonic the Hedgehog 2 (16-bit)

Sonic the Hedgehog 2, or simply Sonic 2, is a platform game developed by Sonic Team in collaboration with Sega Technical Institute, and published by Sega for the Mega Drive/Genesis. It released in Japan on November 21 of 1992 and in North America and Europe three days later on November 24. It is the sequel to Sonic the Hedgehog and was followed by Sonic 3 in 1994. The game introduces Miles "Tails" Prower as an addition to the cast and a new playable character.

The story follows Sonic the Hedgehog and Tails on their mission to stop the evil Doctor Robotnik from stealing the chaos emeralds to power his Death Egg. Sonic and Tails must defeat Robotnik's army and free their friends.

Six months after its release it had sold around six million copies and became the best selling game on the Mega Drive. The game was compatible with Sonic and Knuckles' lock-on feature which allowed the player to play as Knuckles in Sonic 2 It has been included in a number of compilation packages on a range of platforms; on June 11, 2007, the game was made available on the Nintendo Wii's Virtual Console, and released for Xbox Live Arcade on September 12, 2007.