BS Zelda no Densetsu

BS Zelda no Densetsu was the first of the Satellaview's Soundlink games, and a semi-remake of The Legend of Zelda.

Speed Coding?
The current ROM dump of Map 1, Episode 3 has incompletely-coded and glitchy Episode 4 data, particularly on the Blue Manhandla and Blue Gohma bosses, suggesting that the details of Episode 4 were not finalized by the time Episode 3 was released even though they were broadcast only a week apart.

The current ROM dump of Map 2, which is an Episode 1 ROM, has a much more complete and polished Episode 4, including working bosses.

Unused SPC Music
The game was originally broadcast with streaming satellite radio. Originally, very little SPC music played, and most of it near the end. However, there is music data equivalent to the NES game's title, overworld, and dungeon themes which ended up being unused in the actual broadcast. Many emulators and hacks re-enable this music to play at appropriate moments.