User:YourLocalMoon12/sandbox/Prospero

= Prospero (Game) = Prospero is an action-adventure computer game developed by the American company Valve Corporation in the late 1990s, but never released. The game was supposed to be the company's first project, but due to its ambition and engine limitations, it was canceled at the time. Later, the materials and ideas of the project were used for Half-Life, Steam and subsequent products from Valve Corporation.