This is just a basic post to explain How to install a map or custom map, in Terraria. This is NOT a guide on how to create a world. Video Guide This guide is not made by me but by HBVvids. EZ VERSION Open up "My Computer". Windows XP: Look for a program called "My Computer" and Open it up. Vista/Windows 7: Go to your start menu, and click on "Computer", to the right of your start menu. 2. Open up your "Documents" folder. Windows XP: Click on the "Directory Bar" (near the top of the screen) and double click on "My Documents" Vista/Windows 7: Under the "Libraries" bar, click on Documents. 3. Navigate to the "My Games" folder in your documents. All Windows Operating Systems: Scroll down until you see a folder dubbed "My Games", click on it. 4. Find the "Terraria" folder and open up your "Worlds" folder. All Windows Operating Systems: Scroll down until you find a folder dubbed "Terraria", click on it. Do the same for the "Worlds" folder. 5. Navigate to the world's file. Windows XP: Open up a new window of "My Computer" and find the directory where the world that you downloaded is place Vista/Windows 7: Right click on the "Windows Explorer" box in your task bar, then click on "Windows Explorer" inside the right click "menu". Navigate to the directory, where your downloaded world is placed. 6. COPY AND PASTE! All Windows Operating Systems: Right click on the world file. Click on copy. Go to the window where your Terraria world folder is and right click on an empty space and click paste (Haha rhyme). 7. OPEN UP TERRARIA AND GO HAVE SOME FUN!!!!!!!!! KWIK BUT MORE DIFFICULT Open up "My Computer". Copy this and fill in the stuff in <> with your own info. Then paste it to your directory bar. "<Your disk drive letter where you keep my documents>:\<username on windows>\Documents\My Games\Terraria\Worlds" 2. OPEN UP TERRARIA AND GO HAVE SOME FUN!!!!!!!!! Please post a reply to tell me what I did wrong/well and if it helped please like. Thanks!