“TF2,” or “Team Fortress 2” demo files have a .dem extension and contain game-play footage. “Team Fortress 2” is a team-based multiplayer first-person shooter (FPS) game developed by Valve. “TF2” demo files are used by gamers to record their game play and even create movies from multiple demo files. You can play the file from within “Team Fortress 2” or send it to your friends. However, they must have “TF2” installed to view the demo file. A recent “TF2” feature allows you to convert “TF2” demo files to AVI files. AVI files can be viewed by users who don’t have the game installed. Warnings Writer Bio
