The game is Plain about matching pairs of sea creatures. i found it requires fast tapping to clear the board before time runs out.
Step quickly to tap pairs of identical fish, clearing the board before time ends.
The control is tapping the screen directly. There is a timer running down which gives a time limit.
Most effective is to clear outer edges first to see inner fish. Quick thinking is better then slow planning here.
Q: What are the controls? A: Tapping the screen directly.
Q: What is the objective? A: Clear the whole board before time runs out.
Q: What stated feature is there? A: A timer giving a time limit.
Q: What is the main mechanic? A: Tapping two identical fish to match them.
