Insomniac Games, Inc. is an American video game developer based in Burbank, California. It was founded in 1994 by Ted Price as Xtreme Software, and was renamed Insomniac Games a year later. The company is most known for developing several early PlayStation mascots, Spyro the Dragon, Ratchet and Clank, as well as the Resistance franchise, 2014's Sunset Overdrive and the Marvel's Spider-Man series with Marvel Games.

In 2019, the studio was acquired by Sony Interactive Entertainment, becoming a part of SIE Worldwide Studios (now known as PlayStation Studios). The company's first project was Disruptor, for PlayStation, whose poor sales almost led to the company's bankruptcy. Insomniac's next project was Spyro the Dragon, a successful video game that spawned two sequels within two years. Insomniac closely collaborated with Sony Computer Entertainment (later renamed Sony Interactive Entertainment) and created two game franchises, Ratchet & Clank, and Resistance. The two franchises proved to be both a critical and financial success for the company. The company began work on its first multiplatform game Fuse in 2013 (with Electronic Arts as its publisher), but the game turned out to become one of Insomniac's worst-reviewed games.

Since 2014, Insomniac has actively expanded its portfolio of games. The company worked with Microsoft Studios on 2014's Sunset Overdrive, partnered with GameTrust to release the underwater Metroidvania game Song of the Deep, and released several mobile games and virtual reality projects. In 2016, Insomniac released a re-imagining of the first Ratchet & Clank, and in 2018 released its first licensed title, Marvel's Spider-Man for the PlayStation 4; an additional game, Spider-Man: Miles Morales, was released for the PlayStation 4 and PlayStation 5 in 2020. The studio's most recent project is Ratchet & Clank: Rift Apart which released exclusively for the PlayStation 5 in June 2021. It is currently developing Marvel's Spider-Man 2 (2023) and Marvel's Wolverine for the PlayStation 5. Before 2019, Insomniac remained as an independent studio working for Sony and other publishers such as Microsoft, EA, and Oculus. In August 2019, Sony announced it had agreed to acquire Insomniac as the 14th internal studio within SIE Worldwide Studios. Over the years, Insomniac Games has received considerable recognition from critics as an acclaimed video game developer. It was named the twentieth-best video game developer by IGN, and one of the best places to work in America by the Society for Human Resource Management.