Gameplay
The gameplay uses similar mechanics to the original Bubble Bobble game - the standard way to kill enemies is as usual: blowing a bubble to trap them and then popping the bubble before they can escape. Each stage is laid out over the Nintendo DS's dual screens, so there is no scrolling.
One of the newest features of Double Shot is the color scheme. Players can switch between Bub, Bob and Bubu on the fly, with each character shooting a different color bubble. As usual, Bub shoots green bubbles, Bob shoots blue bubbles and Bubu shoots red bubbles. However, a gameplay change is that some enemies can only be attacked by a bubble of a specific color, while others require being trapped by two bubbles of different colors.
Every 10 levels, there is a boss stage, and there are 100 stages in all.
If a player loses all their lives, they must successfully complete a touch screen minigame in order to continue.
The game also supports co-operative multiplayer for multiple DS cards, for up to three players.
Read more about this topic: Bubble Bobble Double Shot