PacWars2 is released under GPL licence. You can download source code from http://www.sourceforge.org/projects/pw2 via CVS.
If you want to join the project you are welcome.

Credits

Antonin Hildebrand aka Woid
ideas, realization, main programming, networking, game logic, some gfx, speech & sound fx, original pw2 map and graphics conversion, win version packager, pw2server code, noexit map, ...

Petr Stastny aka Raist
ideas, game and map gfx, store map, madlab map, co-author of paccore.xm music

Alexander Pipelka aka Braindead
gui code rework, linux & BeOS port and packager

Onrej Broukal aka GameOver
pacwars2.it - main theme music

Pavel Mirejovsky aka Dusty
co-author of paccore.xm music

John Farey
webdesign

Tomas Base aka SLiK
baddream map and gfx

Iain Syme
original PacWars game

Libraries and code used

The Simple DirectMedia Layer v1.2.0
SDL is a cross-platfrom library designed to make it easy to write multi-media software, such as games and emulators.
The Simple DirectMedia Layer library source code is available from: http://www.libsdl.org

ParaGUI v0.7.0 
ParaGUI is a high-level crosssplatfrom application framework and GUI library. It is completely based on the Simple DirectMedia Layer (SDL).
ParaGUI source code is available from: http://www.bms-austria.com/projects/paragui

Mappy library v1.0 
A utility for creating flexible 'maps' for tile based 2D games written by Robin Burrows.
The library is located at http://www.geocities.com/SiliconValley/Vista/7336/robmpy.htm

SeeR scripting library v0.94a 
SeeR is a free multipurpose C-like scripting library written by Przemyslaw Podsiadly.
SeeR homepage is at http://home.elka.pw.edu.pl/~ppodsiad/seer

SDL_mixer v1.2.0 
SDL_mixer is a simple multi-channel audio mixer. It supports 8 channels of 16 bit stereo audio, plus a single channel of music, mixed by the popular MikMod MOD, Timidity MIDI and SMPEG MP3 libraries. Used on non-WIN systems.
The latest version of this library is available from: http://www.libsdl.org .

BASS SOUND SYSTEM v0.9 
Sound system by Ian Luck.
Used on WIN systems.
Available from http://www.un4seen.com/music/

SDL_image v1.2.0
The latest version of this library is available from: http://www.libsdl.org

SDL_net v1.2.0
The latest version of this library is available from: http://www.libsdl.org

SDL_console
Modified and enhanced code from SDL_console library by Garrett Banuk
The source of this library is available from: http://www.libsdl.org.

The Ultimate Packer for eXecutables v1.0.2
UPX is a free, portable, extendable, high-performance executable packer for several different executable formats.
Copyright (c) 1996-1999 Markus Oberhumer & Laszlo Molnar
http://upx.tsx.org

libPNG v1.0.8
LibPNG is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over five years.
The home site for development versions is http://libpng.sourceforge.net/

zlib v1.1.3
zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms.
zlib was written by Jean-loup Gailly (compression) and Mark Adler (decompression)
and can be obtained from http://www.info-zip.org/pub/infozip/zlib/

ImageMagick library
ImageMagick ^TM is a robust collection of tools and libraries to read, write, and manipulate an image in many image formats (over 68 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF.

WinVNC source v3.3 
It is, in essence, a remote display system which allows you to view a computing 'desktop' environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. Dedicated PW2 windows server is based on this GPLed code.
For further information see http://www.uk.research.att.com/vnc/

CodeJock Library v6.9 
Set of MFC GUI classes.
HOmepage at http://www.codejock.com

NullSoft NSIS installer v1.3 
NSIS is a scriptable win32 installer/uninstaller system that doesn't suck and isn't huge. Used on win platform.
Go for it here: http://www.nullsoft.com/free/nsis/

Thanks

Just list of people who helped me:
Mem, Lada, Tessien, Kerim, Nula