Quest

Quest is a powerful but easy-to-use adventure game development system which allows you to create text adventures (also known as "interactive fiction") quickly and easily, using a visual editor which displays everything in plain English. Quest allows you to create and play single-player or multi-player online adventure games. The included QuestNet Server lets you host multiplayer games on your own computer.

Create rooms and objects by pointing and clicking. Play sounds (in WAV, MIDI, MOD, IT, XM, S3M formats and more) and show pictures (in BMP, GIF or JPEG format). Use variables, menus, flags, string handling functions, conditional statements, user-defined commands, functions, loops, custom error messages, run external programs, use timers, libraries, text formatting, watch variables, and much more. Translate the interface and create games in languages other than English. With Quest's powerful features you can develop large, complex games as well as simpler ones. A full reference guide is included. Creating adventure games couldn't be easier!