Sim Companies is a browser game that offers players a chance to test their business skills against others in a virtual economy. It is a business simulation strategy game that allows players to experiment with various resources while managing a company using real-world economic principles. The game's goal is to create a profitable and competitive business, and players must manage the resource supply chain, from production to selling in retail, procuring business partners, ensuring financing, and more.

Sim Companies philosophy is to let players take interesting decisions while building their own business without having to fill in tons of extra settings. The game rewards players with achievement badges, and companies are rewarded for employing people, building infrastructure, making profits off the market, and other activities.

The game's edge comes from an advanced economic model that simulates the retail industry's response to the supply and pricing that virtual companies provide. The players have control over quantity and price when offering goods in their stores. There's no linear path to success, and the decisions are good and bad based on current market and retail conditions. There's no sure strategy of winning, and even if you found the right strategy, there are always ways to improve it.