Ripple Island (リップルアイランド, Rippuru Airando) is an adventure game developed and published by Sunsoft.

The game was re-released for the PlayStation in 2002 as part of the Memorial Series Sunsoft Vol.

A manga version by one of the game's character designers, Moriken, was serialized in Wanpaku Comics (Tokuma Shoten).

The character's appearances differ greatly in the manga version, and only lasted 4 chapters without reaching the conclusion of the game's story-line.

The game was originally planned for the Family Computer Disk System with the title The Darkness of the Emperor (皇帝の闇, Kōtei no Yami).