Big Factory is a free simulation game for Android developed by Satori Mobile. The game allows you to run a factory, build new machines, and produce different types of goods. As you progress, you can upgrade your machines to increase production speed and earn more cash.

The gameplay is simple and easy to understand. You start with a basic factory and a few machines. You then need to manage your resources efficiently to produce goods and make a profit. The game offers a variety of machines and products to produce, and the upgrade system keeps things interesting.

Overall, Big Factory is a fun and engaging simulation game that is perfect for casual gamers. It is free to play and does not require an internet connection, making it accessible for everyone. If you enjoy simulation games, then Big Factory is definitely worth checking out.