According to EludeVisibility.org, the game is an RPG similar to Zelda, in which the hero looks a lot like Link. I’d try to elaborate but the game crashed. ZSNES doesn’t run it properly, but SNES9X seems to run it well.
Translation Description:
An english translation patch of Marvelous ~ mou hitotsu no takarajima, by tashi, with almost fully completed dialogue
ROM / ISO Information:
ROM file (unheadered, 3.145.728 Bytes, use the .xdelta patch to be sure.):
Marvelous - Mouhitotsu no Takarajima (J).smc (GoodSNES 2.04)
