Release Date: 10/10/2007, updated in 2022
Out Now: Android, Mac, PC, Switch and Xbox 360
Skill Rating: 8+ year-olds
Players: 1
Genres: Adventure, Puzzle (Action, Narrative, Platform, Sequencing, Simulation and Traversal)
Accessibility: 25 features
Components: 3D First-Person
Developer: Valve Software (@ValveSoftware)
Costs: Purchase cost