Question: What American system ran the Mega Drive game Shining Force?

Context paragraphs:
Shining Force II: Shining Force II (シャイニング・フォースII 古えの封印 , Shainingu Fōsu Tsū: Inishie no Fūin , lit.  "Shining Force II: The Ancient Seal") , is a tactical role-playing game for the Mega Drive/Genesis console developed by Sonic!  Software Planning in 1993.  Its storyline is not directly connected to the original "Shining Force", although a Game Gear title "" links the two games' plots.

Shining Force Gaiden: Final Conflict: Shining Force Gaiden: Final Conflict (シャイニング・フォース外伝 ～ファイナル コンフリクト～ ) is a 1995 tactical role-playing game for the Game Gear, taking place between the games "Shining Force" and "Shining Force II".  It was released after both games, with the intention of connecting their plots.  Despite its name, it is not directly story-related to "Shining Force Gaiden" or "", also released for Game Gear.  Unlike most of its predecessors, the game was never released outside Japan.  English patches have been created by fans for players who cannot speak Japanese.

Shining Force Feather: Shining Force Feather (シャイニング・フォース フェザー ) is a turn-based tactical role-playing game developed by Flight-Plan and published by Sega.  It's the 20th mothership title of the Shining series (not counting remakes) and was released in Japan on February 19, 2009.  Produced by Yoichi Shimosato and featuring character designs by Noizi Ito and movie cutscenes made by famous animation studio Gonzo, it was the first Shining Force game to be released on the Nintendo DS.  It is also one of the few recent games using the Shining name to return to the series' tactical roots, whereas many of the others after Shining Force 3 were either action-RPGs or standard turn-based JRPGs.

Disney's Pocahontas (video game): Disney's Pocahontas is a platform game based on the film of the same name.  The Sega Genesis/Mega Drive version was developed by Funcom on contract with Disney and was released on January 1, 1996.  It was followed by a later version for the Game Boy developed by Tiertex Design Studios and released on June 10, 1996, nearly a year after the film's premiere.  A Super Nintendo Entertainment System version of the game was under development around the same time as the Mega Drive/Genesis version, but was canceled due to development being too far behind to coincide with the Mega Drive/Genesis release.

Shining Force Gaiden: Shining Force Gaiden: Ensei - Jashin no Kuni he (シャイニング・フォース外伝 ～遠征・邪神の国へ～ ) is a 1992 tactical role-playing game released only in Japan for the Sega Game Gear.  It takes place 20 years after the "Shining Force", and is the first game in the "Shining Force Gaiden" series.

Decap Attack: Decap Attack is a 1991 platformer video game for the Sega Genesis.  The game is also a part of the "Sega Genesis Collection (Sega Mega Drive Collection)" for the PlayStation 2 and PlayStation Portable and "Sonic's Ultimate Genesis Collection (Sega Mega Drive Ultimate Collection)" for Xbox 360 and PlayStation 3.  The game is a westernized version of the 1990 Japanese Mega Drive game Magical Hat no Buttobi Tabo!  Daibōken (まじかるハットのぶっとびターボ！大冒険 , Magical Hat Flying Turbo!  Adventure ) , with the art, plot, music, and level designs all being changed.  Flying Turbo Adventure was based on the anime series "Magical Hat", for which the license was not obtained outside Japan.  Both are updates of the 1988 NES game "Kid Kool" and the 1989 Master System game "Psycho Fox".  Decap Attack was also released on Steam on October 26, 2010.

Madō Monogatari I: Madō Monogatari I is a role-playing video game for the Mega Drive that was the last official Sega Mega Drive game released in Japan.  The game is part of the long-running Madou Monogatari series.

Sega Genesis: The Sega Genesis, known as the Mega Drive in regions outside of North America, is a 16-bit home video game console which was developed and sold by Sega Enterprises, Ltd. The Genesis was Sega's third console and the successor to the Master System.  Sega first released the console as the Mega Drive in Japan in 1988, followed by a North American debut under the Genesis moniker in 1989.  In 1990, the console was distributed as the Mega Drive by Virgin Mastertronic in Europe, by Ozisoft in Australasia, and by Tectoy in Brazil.  In South Korea, the systems were distributed by Samsung and were known as the Super Gam*Boy, and later the Super Aladdin Boy.

Mega (magazine): Mega, subtitled "100% pure Sega Mega Drive...", was a monthly magazine, published in the United Kingdom, aimed at users of the Sega Mega Drive and its additions, the Mega-CD and 32X.  During its time as one of the main Mega Drive publications, "Mega" covered the golden age of the Sega Mega Drive from 1992 to 1995.  The magazine went through many changes including a re-design in content and layout before being sold to a rival publisher.

Shining Force: Shining Force: The Legacy of Great Intention (シャイニング・フォース 神々の遺産 , Shainingu Fōsu: Kamigami no Isan , lit.  "Shining Force: The Legacy of the Gods") , is a 1992 fantasy turn-based tactics role-playing video game for the Mega Drive/Genesis console.  While primarily a traditional fantasy-themed game, it contains some science fiction elements.

Supporting paragraphs: Shining Force Sega Genesis
Answer: Sega Genesis