In the world of computer gaming, Steam is a game changer. It's not only a standout product but also big business. The online digital distribution platform and PC video game storefront allows users to buy and play more than 30,000 games and engage in social networking. For readers age 12 and up, this STEM-based title dives inside the technology property and examines its features, design and development history, programming innovations, and reception from users. User-generated content and legal issues are also discussed. Includes a glossary, sidebars, and profiles of notable creators.