The Story of Thor: A Successor of The Light (ストーリー オブ トア 〜光を継ぐ者〜 sutōrī obu toa〜 hikari wo tsugu mono 〜?), known as Beyond Oasis in the US, is an action-RPG video game by 1994 developed by the Ancient company and published by Sega for the Sega Mega Drive.

It was later re-released for the Wii Virtual Console on March 19, 2007 in North America, and on April 5 of the same year in Europe. It was also included in the Sega Mega Drive Ultimate Collection compilation for the Microsoft Xbox 360 and Sony PlayStation 3.

In 2017, the game was ported to iOS and Android as part of SEGA's SEGA Forever service.

In 2018 the video game was also included in the SEGA Mega Drive Classics compilation.