Merge and Dig is a free mobile game available for the iPhone. Developed by Supersonic Studios LTD, this game is categorized under the Games section on the App Store.

The game is designed to let you become rich by buying tools and upgrading them. The gameplay is simple- you start by digging for resources which you can sell to earn money. You can then use this money to upgrade your tools and buy more advanced machinery to dig deeper and find more valuable resources. The physics engine of the game is well-implemented and adds to the overall experience.

The game has a user-friendly interface and the graphics are appealing. The in-game store offers a variety of tools and machinery to buy and upgrade. Overall, Merge and Dig is a fun and engaging game for those who enjoy resource management games.