Rainbow Islands NES

Taito arcade platformer and a sequel to Bubble Bobble, where the protagonists Bub and Bob return in human form (Bubby and Bobby) to rescue the Rainbow Islands by shooting rainbows that act as platforms and attacks. Gameplay involves climbing vertically scrolling levels to reach the top, using rainbows to defeat enemies and collect items, with a rising sea level adding pressure. It's known for its cute style, simple controls, and surprising depth and difficulty, with secret levels unlocked by collecting diamonds