Just open the preferences and go through them one by one to find out if the game you want to run in a window offers that option natively. This tutorial will allow you to run ANY SOFTWARE or GAME that works on your PC in WINDOW MODE. % Guaranteed!christuskirche-kelsterbach.de time and money are not an issue. Try the combination "Alt + Enter" while ingame. 2. Go to your game folder [Steam installation folder]\Steam\steamapps\common. Find the game.