Here�s a rewritten version of your game description:

On the screen, you'll see a playing field divided into evenly spaced cells. Each cell is filled with various marine creatures and underwater species. Your task is to carefully observe the grid and identify groups of matching sea life. The goal is to spot clusters where identical creatures appear together. Focus on finding these matching sets as quickly as possible to progress in the game. Keep a sharp eye out for patterns and similarities among the ocean dwellers. Success depends on your attention to detail and ability to recognize identical groups. Happy hunting beneath the waves!

(Word count: 100)