SCI Companion is a completely free IDE (integrated development environment) that lets you create games that run on Sierra’s SCI engine. SCI Companion 3 is now available, which offers support for SCI1.1+, which includes VGA graphics and digital audio.


Create 16-color EGA graphical adventures with a text parser interface (in the style of King’s Quest 4, Space Quest 3 or Leisure Suit Larry 3).


Create 256-color VGA graphical adventures with a point-and-click interface (in the style of Space Quest 5, Gabriel Knight, or Quest For Glory 3).


Comes with a complete well-documented class system and template game.


Lets you browse, extract or modify graphics, text and sounds from nearly any SCI game that you own.


Decompile the code behind these classic games to see how they work (or find Easter eggs). Scripting in SCI is accomplished via a language similar to LISP and SmallTalk.


Includes streamlined editors for graphic assets.


And other game resources like text and audio.

Where can I play the games I create?

SCI Companion itself is a Windows desktop application, but these classic games can be played on DOSBox (a DOS emulator, a version of which is included with SCI Companion), or ScummVM (a VM for several classic adventure game engines). DOSBox and ScummVM work on Windows, MacOSX, Linux and more.

What does it cost?

SCI Companion is free and open source. The source code is licensed under the GNU General Public License version 2 or later. Of course, if you want to open or edit Sierra’s original games, you need to own them. They can be purchased for cheap on

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