Sonic the Hedgehog
Due to the success of "Sonic" games on the Sega Genesis, the series was introduced to the Master System and the Game Gear. Sega began by releasing "Sonic the Hedgehog", a 2D platform game, in 1991. The game featured Sonic's ability to run and to jump at high speeds like its Mega Drive/Genesis counterpart but with notably different level design and music. Sega later released "Sonic the Hedgehog 2" another 2D platform game, in 1992. The game differed from its Genesis counterpart with different levels and music and by not including a "spin dash" maneuver. It also featured a different storyline in which Doctor Robotnik kidnaps Tails, who is non-playable in the Master System/Game Gear version. "Sonic Chaos"/"Sonic and Tails" (Japan), released in 1993, was similar to the earlier two Sega Master System/Game Gear "Sonic" games, but featured Tails as a playable character. A sequel, "Sonic Triple Trouble"/"Sonic and Tails 2" (Japan), a 2D platform game, was released in 1994 for the Game Gear and introduced a new character, Nack the Weasel, who, along with Knuckles and Doctor Robotnik, raced to collect the Chaos Emeralds. One of the last games for the Sega Game Gear, "Sonic Blast", was released in 1996 and featured prerendered sprites.
Flicky
Numerous Sega video game compilations feature "Flicky". The Genesis version was compiled into "Game no Kanzume Vol. 1" (1994), a Sega CD compilation in Japan which featured CD quality remixes of the original soundtrack. The Genesis port was also featured in "Sonic Mega Collection" (2002), "Sega Genesis Collection" (2006), "Sonic's Ultimate Genesis Collection" (2009), "Sega Mega Drive Classic Collection" (2010), and even Genesis-based plug and play devices. The arcade version has been released in Japan on the "Sega Ages: Memorial Collection Vol. 1" (1996) for the Sega Saturn, and the "Sega Memorial Selection" (1998) for Windows"." "Flicky" has also been ported to mobile devices. The first port was in 2001 for the "Sega Ages" line in Japan. In March 2003, a similar variant appeared on the Sonic Cafe service, again exclusive to Japan. In 2007, the Sonic Cafe port was upgraded with better graphics and ported to North America for the Sega Mobile service. The Genesis port was released on Steam in 2010.
The Flicky character has made cameo appearances in several other Sega arcade games, effectively becoming a mascot for Sega's early arcade years. In "Teddy Boy Blues" (1985), she appears as a shooting target among other Sega mascots such as Pengo. In the puzzle game "Bloxeed", she can be used as a special weapon to drop blocks on the playing field. She is also playable in "SDI" (1987) with the use of a cheat code. Flicky has a minor cameo appearance in "Flash Point", where she will wish the player good luck before each round, and in the racing game "Super Monaco GP" (1989), where she appears on the racetrack banners and the game over screen. Flicky has also become an entire species and reoccurring minor character in the "Sonic the Hedgehog" series and is featured most prominently in "Sonic 3D: Flickies' Island" (1996). Flicky has continued to have minor cameo appearances in other Sega titles, including "Shenmue" (1999), "Gunstar Super Heroes" (2005), and "Mario & Sonic at the Olympic Games" (2007).