Taking place in the land of Toren, the player assume the role of Spear, a young trainee knight who is tasked by King Algameth IX to investigate the insurgence of monsters that are appearing in the kingdom.

The title garnered positive reception from reviewers, who compared it with Dragon Warrior and Final Fantasy; praise was given to the battle system, presentation and music but other felt mixed in regards to the gameplay and some criticized certain aspects.

Mysterious Song is a role-playing game reminiscent of Dragon Warrior and Final Fantasy, where the player assume the role of Spear, who is tasked by King Algameth IX of the Toren kingdom to investigate the sudden insurgence of monsters in the land.

[5] Zuchowski and other independent outlets stated that he and Darkness Ethereal worked on the project for three months between 1999 and 2000 using QuickBASIC with help from other members,[6][7][8] in addition of acting as composer of the soundtrack.

[6][17] The game was later distributed on websites such as CNET's Download.com, ZDNet and RPGDX, in addition of being included as part of the CD-appendix MB 2002: Huvi-ja Hyötyromppu bundled with a 2002 issue of Finnish computer magazine MikroBitti.

[4] Terry Cavanagh of QB Gamer also praised the graphics, music, replay value, difficulty and plot but stated that the Dragon Warrior-like gameplay was its weakest aspect.

[28] Gianfranco Berardi of GBGames noted similarities with Final Fantasy and Dragon Warrior but gave positive remarks to the visual presentation and music but criticized several aspects.

[3] "Jybbe" of Wasted Oldies also drew comparison with both Final Fantasy and Dragon Warrior, but praised the easy-to-learn gameplay and soundtrack but criticized the plot for being linear.

[34] In 2013, Eponasoft announced a sequel for TurboGrafx-CD titled Mysterious Song II: Eternal Silence but development remained on hold due to Lee Perry working on another project at the time called FX-Unit Yuki: The Henshin Engine.