After the game is completed, Wise Man calls Goemon's gang to thank and tell them that he invented a new and more powerful machine to resurrect the dead, again. Suddenly, a baby appears from nowhere, and Ebisumaru claims that it's from him. Bismaru appears and tries to kidnap the new ghost return machine again, but the baby accidentally presses the machine's self-destruct button. As in previous "Ganbare Goemon" games, the plot is wacky and lighthearted. Nintendo wrote that Goemon seems "at ease roaming a medieval Japan bustling with robots, DJs, space ships and extra-hold mousse". Konami heavily promoted the "Ganbare Goemon" series for the Christmas season of 1998, as three games were due to be released—"Goemon's Great Adventure" and the PlayStation release "" would premiere on December 23, 1998, and "" for the Game Boy Color would enter the market on January 14, 1999. "Great Adventure" and its PlayStation counterpart were both shown to fans at the 1998 Tokyo Game Show, where children flocked to play them. News of an English translation and North American release was first provided by a Konami employee in September 1998, and the finished game appeared at the 1999 Electronic Entertainment Expo, though without the theme song sequence. It was originally slated to be named "Mystical Ninja: Goemon 2" in North America; this title was kept in some form for the PAL release, entitled "Mystical Ninja 2: Starring Goemon". To generate interest and incentive for the North American release, Konami included $20 rebates for "Goemon's Great Adventure" or "Castlevania 64" in copies of "Hybrid Heaven". "Goemon's Great Adventure" continues its predecessor's musical style by integrating modern synthesizers and traditional Japanese instruments. The game features two musical numbers: "SMILE AGAIN", a rock theme song, and "DOUBLE IMPACT", an updated version of "I Am Impact" from "Mystical Ninja Starring Goemon". Two performers from that game returned for its sequel; Ichirou Mizuki voiced "I Am Impact"'s music with Sakura Tange and Hironobu Kageyama sang "Great Adventure"s theme song. These performances were inexplicably cut from the North American and European releases of the game, leaving the title screen silent and eliminating the Impact battle preparation sequence. Japanese voice acting in the opening and ending scenes was left in. A team of five composers created the game's main soundtrack, each personally writing several demos and arranging finished pieces.