Plain physics can be a mess in this game. i find matching fish simple but the mechanics sometimes feel wonky.
You swap adjacent fish with a tap or drag, to clear lines.
The main control is to tap or drag to move the fish. The objective is to match fish and clear lines.
Most players should focus on the physics when planning moves. It is better to plan moves before swapping.
Q: What are the controls? A: You tap or drag to move the fish.
Q: What is the objective? A: The objective is to match fish and clear lines.
Q: Are there stated features? A: Not stated.
Q: What is the main mechanic? A: The main mechanic is swapping adjacent fish.