Guide for Rainbow Islands

Guide for Rainbow Islands (レインボーアイランド?) is a 1987 arcade game. The game is subtitled "The Story of Bubble Bobble 2" and is the sequel to Taito's hit game Bubble Bobble from the previous year. It is the second of four arcade games in the Bubble Bobble series.

The main characters are Bubblun and Bobblun, the protagonists of Bubble Bobble (known as "Bub and Bob" in the western releases). However, in this game they appear in their human forms as "Bubby" and "Bobby", as opposed to the "bubble dragons" of the first game (following on from the first game's true ending). Also unlike the first game, players must now "alternate" (i.e., take turns), with player one as Bubby (green shirt), and player 2 as Bobby (blue shirt) (the same color scheme as in the first game).

Gameplay:
- Players can release rainbows that act as both weapons against the enemies and as a makeshift platform. By jumping on them, they fall down beating any enemies below it. Collecting power-ups increases the player's speed, the speed of the rainbows and how many are spawned. If players take too long in a level, water will start to rise up from the bottom of the stage.
- Like Bubble Bobble before it, the game has multiple endings. To get the "True and Happy" ending you must find and complete the three secret islands (although most consumer versions of the game completely lack the secret islands).