Simple program that finds custom maps in the maps folder and make entries for them in the extras.txt script. INSTRUCTIONS: - Put this in your portal 2 or portal2 folder. This is Required for the application to work! (commonly placed at "/Users/your-user-name-here/Library/Application Support/Steam/SteamApps/common/portal 2") - Copy custom maps to the maps folder ("portal 2/portal2/maps") and run the given program - Play Portal2 and find your custom maps in the menu called "Extra" This is hopefully just the first version. I am hoping to make a map manager but at the time exams are coming up and Valve will probably release some better way of playing custom maps before I have the time. CyCroniCa.