A special treasure has been found at the bottom of the ocean, which bubble keeps emerging with magical energy. People can get endless energy if collect them in a certain order.
It's much more than a "just tap the bubble" game. For collecting more energy in a limited time, requires an combination of observation, quick response, and a lot of strategies using.

Some Tips:
1. the bubble is not just moving in a straight line, smart bubbles know how to use the curve to avoid your tapping, even more smart bubbles can change their direction.
2. using the rainbow bubbles instead of wasting time on single color bubble which are difficult to find or tap.
3. capture freeze, double score and other useful special objects, but avoid the time reducing, bombs that such harmful objects.
4. The extra energy bonus will continue to increase if you are not missing an collection.
5. reach 20 succesful collections to activate the bonus level!

and much more...