High Quality Content by WIKIPEDIA articles! Sonic the Hedgehog Pocket Adventure is a video game in the Sonic the Hedgehog series. It was released in 1999 for the Neo Geo Pocket Color handheld game console. The game is similar in level design and gameplay to Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis but includes a few features from the original Sonic the Hedgehog, as well as special features such as puzzles and multiplayer options. It was the second Sonic game to be released for a non-Sega console (the first was Sonic Jam for the Game.com). It was also the last game to feature Sonic as the only playable character until the release of Sonic and the Secret Rings in 2007.