Quest is free open source software that lets you make interactive fiction - you can make text adventure games (like Zork, or Hitchhiker's Guide to the Galaxy) and gamebooks (like Choose Your Own Adventure). No programming is required - everything about your game is displayed in plain English, and a full tutorial is included. Your game can be played in a web browser, or downloaded to a PC. You can add pictures to your game, a map, music and sound effects - even video from YouTube or Vimeo. You can create games in English, French, German, Spanish, Italian, Dutch, Portuguese, Romanian or Esperanto - or create your own translation. When your game is ready, you can upload it to our website. People can then play your game online using a web browser, with no need to download any software. Quest is a powerful game platform. It is designed to be easy to learn, but has huge power if you need it. You can even create your own user interface with HTML and Javascript, to completely customise the look and feel of your game. You can create and share libraries of advanced functionality. Quest is licenced under Ms-PL (similar to MIT), which means you can download and modify the Quest source code, and even use it in closed source commercial applications.