This is an advanced version of the classic puzzle game Color Lines.
The basic rules ares simple: arrange at least 5 bubbles of the same color in a line (horizontal, vertical or diagonal), then they will be cleared and scores are gained; After each move without scoring, 3 new bubbles on the billboard drop randomly on the board.
If you want to keep your game on you need to take every probability into account carefully, or the board will be filled with bubbles soon then the game is over.
New features are introduced in this game to make it more interesting and challenging. If the player keeps clearing the bubbles continuously, the gears will be enabled as an award. There are three gears now.
* Refresh: use it to generate 3 new dropping bubbles.
* Bomb: use it (by dragging it to the board) to clear all the bubbles in a specified zone.
* Lightning: use it (by dragging it to the board) to clear a linked-bubble-zone. (when at least 5 bubbles of the same color are linked horizontal or vertical)
Game Center supported.