Save my fish is about water, you have to get the water into a fishbowl so the fish can swim again.
The control works with the gyroscope. You need to hold the phone flat and gently rotate it in the right direction.
With your concentration and agility you can control the water.
Of course, there are obstacles to make the game challenging. If you lose too much water you lose the game,
the bowl can then no longer be filled.
Every time you have completed a level pack you win a fish that you can let swim in your own aquarium. Save them all.