Adventure Game Studio v2.72 was used to create this game.
These are the awesome people responsible for creating AGS

The Adventure Game Studio v2 was programmed by Chris Jones. 
Linux port by Shawn Walker (drevil@warpcore.org). 
Mac port by Steve McCrea. 
Demo Quest III updated by RickJ. 
The default icon bar graphics were done by Teemu Eramaa (teemue@nic.fi) 
Windows editor icons and graphics by RodeKill. 
Executable file icons by netmonkey. 
Blank Game template created by AGA. 
Hq2x and Hq3x scalers by Maxim Stepin. 
Hi-colour fade out/in routines by Matthew Leverton. 
Sprite anti-aliasing code by Michael Bukin. 
The DOS engine uses DJGPP, a free 32-bit C/C++ compiler by DJ Delorie, which you can get from http://www.delorie.com/djgpp/ 
Graphics and sound are courtesy of the Allegro graphics library by Shawn Hargreaves and many others. You can get it at http://alleg.sourceforge.net/ 
Editor uses wxWindows, a free GUI library from http://www.wxwindows.org 
Script editor component is scintilla by Neil Hodgson. You can get it from http://www.scintilla.org 
GIF import/export code (GIFAllegS) by Martin Zolnieryk / Stars Dev Company. 
TrueType font display uses ALFont by Javier Gonzalez and the Freetype project. 
Windows engine uses libcda CD player by Peter Wang. 
PNG file importer Copyright (c) 2000-2002 Glenn Randers-Pehrson; converter by Peter Wang. 
MP3 player is almp3 by Javier Gonzalez and the FreeAmp team. It uses the mpg123 MP3 decoder. 
OGG player is alogg by Javier Gonzalez, using the Ogg Vorbis decoder, which is available from http://www.xiph.org/ 
Windows MOD/XM/S3M/IT player is DUMB, (C) 2001-2003 Ben Davis, Robert J Ohannessian and Julien Cugniere. You can get it from http://dumb.sf.net/ 
DOS/Linux engine use JGMOD mod player by Guan Foo Wah. You can find it at http://surf.to/jgmod 
Executables compressed with UPX v1.22w (c) 1996-2002 by Laszlo Molnar&Markus F.X.J. Oberhumer 
Includes CWSDPMI DPMI host (c) 1994-1997 by Charles W. Sandmann 

TrueType font display uses ALFont by Javier Gonzalez and the Freetype project. Distributed under the terms of the FreeType project license.

OGG player is alogg by Javier Gonzalez, using the Ogg Vorbis decoder, which is available from http://www.xiph.org/ Copyright (c) 2002, Xiph.org Foundation

MP3 player is almp3, by Javier Gonzalez and the FreeAmp team. It uses the mpg123 MP3 decoder, and is distributed under the terms of the GNU Lesser General Public License version 2.1.