Bethesda ook aan Portal
The download also offers Step, Portal, and Time challenges for you Portal fanatics that are looking for a real challenge.According to Daryl, here is how you can install them to your PC:
Simply extract the Ren_Tests.bmz anywhere, then load up Portal, click ‘Bonus Maps,’ click “Import Bonus Maps”, then just navigate to where the Ren_Tests.bmz file is, select it, and click ‘Open.’ Then, the Ren_Test Mappack will be in your Bonus Maps window.