Idle Arms Factory is a simulation game developed by ジープラ株式会社 for Android devices. In this game, you take on the role of a CEO in a military company and your goal is to manage an arms factory to earn huge income.

The game allows you to automate the production in your factory, so you can earn money even while you're not actively playing. You can also level up your factories to boost your idle income and use items to potentially increase your income by over x100.

As you earn more money, you can expand your factories and produce stronger weapons, allowing you to dominate the weapon industry. With about 20 types of weapons to produce, including machine guns, tanks, helicopters, and missiles, you have the opportunity to build the biggest military company in the world.

Overall, Idle Arms Factory offers an engaging simulation experience where you can become a successful CEO and dominate the weapon industry. With its idle gameplay mechanics and various types of weapons to produce, the game provides a satisfying progression system and the opportunity to expand your factories to become the most powerful military company.