Rainbow Islands is an action-adventure platform game for the Nintendo Entertainment System (NES). Developed by Taito, it is the direct sequel to Bubble Bobble, revolving around the same leading characters, Bubby and Bobby. This time, instead of blowing bubbles, players create rainbows to defeat enemies and navigate levels. The objective is to ascend to the top of each of the game's ten islands while battling various enemies and overcoming obstacles. It features bright, colourful visuals and engaging gameplay, that offers a fun and challenging retro gaming experience.