Shadow of the Colossus  is a 2005 action-adventure game developed by Japan Studio and Team Ico, and published by Sony Computer Entertainment for the PlayStation 2. It takes place in a fantasy setting and follows Wander, a young man who enters an isolated and abandoned region of the realm seeking the power to revive a girl named Mono. The player assumes the role of Wander as he embarks on a mission that might entail Mono's resurrection: to locate and destroy the colossi, sixteen massive beings spread across the forbidden land, which the protagonist traverses by horseback and on foot.

The game was directed by Fumito Ueda and developed at Sony Computer Entertainment's International Production Studio 1, also known as Team Ico, the same development team responsible for the acclaimed PlayStation 2 title Ico, to which the game is considered a spiritual successor. Сonceived as an online multiplayer game titled NICO directly after Ico's completion, Shadow of the Colossus underwent a lengthy production cycle during which it was redeveloped as a single-player title. The team sought to create an outstanding interactive experience by including a distinct visual design, an unorthodox gameplay template, and non-player characters with sophisticated artificial intelligence such as the colossi and Wander's horse, Agro.

Cited as an influential title in the video game industry and one of the best video games ever made, Shadow of the Colossus is often regarded as an important example of video game as art due to its minimalist landscape designs, immersive gameplay, and emotional rendition of the player character's journey. It received wide critical acclaim by the media and was met with strong sales compared to Ico, due in part to a larger marketing campaign. The game won several awards for its audio, design, and overall quality. A remastered version for the PlayStation 3 was released alongside Ico as The Ico & Shadow of the Colossus Collection in September 2011, developed by Bluepoint Games, who later produced a high definition remake of Shadow of the Colossus for the PlayStation 4 in 2018.