Keep your bubble alive and don't touch the fish. In Bubble Keep are you the "Keeper of the Bubble". Collect coins and avoid the fish - but be cautious: while the time flies by, your bubble keeps growing and is harder and harder to keep safe.
Goldfish and silverfish are trying to help you, but look out: the other fish are the enemy! It keeps getting harder to keep the bubble alive. Every 10 seconds alive bring you an extra coin for your highscore hunt.