King Neptune's Adventure is an unlicensed sidescroller action game created for the Nintendo Entertainment System that was released in 1990 by Color Dreams.

[1][2] Players play as King Neptune, as they venture through ships, oceans and Atlantis.

Eight of King Neptune's treasures have been stolen over the years, including his most powerful one, the magical Orb of Peace.

King Neptune is armed with "bolts of goodness", as well as bubble bombs.

[3] Most of the game cartridges came in a baby blue color, but like most other Color Dreams games it also came in black, the black variant being more uncommon than the baby blue variant.