Windows XP Gui Test is a discontinued simulation of Windows XP in Roblox. Console users: Please plug in a Mouse and Keyboard for a better experience in game. This can be played with a controller, but you may have some difficulty using some programs. We've now made the game open-source so you can check out how the game works and even make your own games based off it. You don't even have to give credit (though it would be appreciated!) 2021-2024 The OS Simulation Project. Thanks for playing!