Valve Software

Campo Santo Productions, established in 2013 and headquartered in San Francisco, California, is a video game development company. It specializes in creating narrative-driven games for PC, Mac, and Linux platforms. The studio is renowned for its debut title, Firewatch, an outdoor exploration game set in the Wyoming wilderness. As of 2018, Campo Santo operates as a subsidiary of Valve Corporation.

eMagin Corporation specializes in the design, development, manufacture, and marketing of organic light-emitting diode (OLED) microdisplays and virtual imaging products. Founded in 1996 and headquartered in Hopewell Junction, New York, the company offers various OLED display solutions, including super video graphics array microdisplays, video graphics array OLED-XL products, and design reference kits tailored for original equipment manufacturers (OEMs). eMagin is recognized for its Direct Patterning Technology, which provides advantages such as low power consumption, high brightness, and superior color quality. Its products are utilized across multiple sectors, including military, aviation, law enforcement, medical applications, and consumer electronics. The company serves a global market, distributing its offerings directly in North America, Asia, and Europe, and through partners in Asia and South Korea.

Impulsonic, Inc. is a software company based in Carrboro, North Carolina, founded in 2011. It specializes in developing PHONON, a physics-based audio solution designed for video games and virtual reality applications. The company focuses on audio spatialization, providing tools that enhance binaural 3D audio experiences within immersive environments. Its flagship product, Phonon 3D, utilizes a binaural audio algorithm that integrates with head tracking technology in virtual reality headsets, allowing game developers to create more realistic soundscapes. In 2017, Impulsonic became a subsidiary of Valve Corporation, further strengthening its position in the gaming and virtual reality sectors.