Free online game server software for linux

Online Cardgame System project is a client-server system for playing card games over the net.
OCS is a client-server cardgame system, similar to those found at Yahoo! Games and elsewhere. The server is portable and has been tested under Linux, Win32, and several unix systems. We currently have Win32 and Java clients available, and a Qt client for Linux is in development.
Games are implemented as plugin modules, so new games can be added without recompiling the server. In addition, the client is written to be unaware of the mechanics of gameplay, so it can theoretically play any games the server supports without having to know how to play them specifically.
We currently have Euchre and Spades implemented, with bot support for both games, meaning you dont need a full 4 people to play a game. We plan on implementing more games in the future.
On a side note, development of this project tends to wax and wane with our motivation and amount of schoolwork.
Enhancements:
- Massive restructure of code into more object orientated patterns
- Added daemon capability to server
- Got rid of checksumming in the protocol since TCP/IP does it internally
- Padded STRINGS in the protocol on DWORD boundaries
- Added support for loadable account managers
- Removed crypting of the password by ocsd (account managers may do it)
- Added ODBC (for windows) and mySQL (for unix) account managers (database connectivity!!)
- Modified packet classes to throw exceptions instead of returning true-false
- Created packet manager classes to queue client packets, reduces total send calls
- Implemented bots when there arent enough people to play games
- Added new command line processing capabilities as well as configuration file support
- Fixed bug that allowed a person to overwrite an account when creating that same account
- Win32 - Made server link with DLL runtime library to reduce executable size and ease DLL dependencies
- Updated messages to be sent in HTML since the main clients support it
- Created Java client which can be run as an application or as an applet
- After a client is booted from a game, they cannot join the game again until they receive an invitation
- Fixed libtidy bug which caused it to erroneously format HTML
- Euchre supports intelligent bots
- Spades supports moronic bots (the AI is horrible but allows for gameplay)
- Fixed Spades textual problem when a round was over.
- Fixed Spades score calculation that resulted in no loss of points
- Win32 client now supports HTML (IE4+ required)
- Win32 client can now join games by right-clicking on an empty game slot in the game view.
- Fixed major bug in Win32 client that would cause it to crash when sending private messages
- Win32 client can now use /msg to send private messages

Empire Server is a server for the Empire game.
Empire is a real time, multiplayer, Internet-based game, featuring military, diplomatic, and economic goals. For more information on the game of Empire, please check the FAQ.
A brief description of Empire is also available, as is a list of credits for the maintainers and people who have sent in code/bug fixes/ideas/etc. An overview of the Wolfpack Empire team is also available.
While Empire is possessed of a great deal of complexities, with a bit of effort, it has proven to be the one definitive Internet experience for a great deal of people. Empire is the pinnacle of strategy games in todays world. There is none better. All the information needed to become involved is available here, the official site for the game of Empire.
Enhancements:
- Fix declare to prevent the deity from changing relations for a player to self. Allow the deity to set the relations of a player towards the deity.
- Fix arm not to put the same nuke on multiple planes (broken in 4.3.3).
- New option AUTO_POWER.
- Repair allied land units.
- Only repair owned and allied planes.
- Fix repair of planes on foreign carriers: repair allied planes, ignore the others. Before 4.3.3, carriers destroyed rather than repaired foreign planes. Since 4.3.3, foreign planes were treated as recoverable error.
- Fix automatic fortification of land units to use all excess mobility even when mobility delta exceeds mobility maximum.
- Disable automatic fortification of land units when MOB_ACCESS is on, because it is prohibitively slow then (broken in 4.2.13).
- Budget now shows level production (tech, education, research and happiness) rounded instead of randomly rounded.
- Fix update not to randomly flush small level production to zero.
- Fix overly restrictive game file locking under Windows (broken in 4.3.8).
- Fix navigate to charge mobility for sweeping mines without moving (broken in 4.3.6).
- Code cleanup.

Game Server Startup Script project is a startup script to manage dedicated game servers like Quake3.
Game Server Startup Scripts is a startup script to manage a wide variety of Linux dedicated game servers. It can start/stop/restart/fix dedicated game servers like Quake3, Half Life, Tribes 2, UT2K4, BF1942 and others.
It uses qstat through cron to validate that a game is running as expected. If a game is not running as expected, the game is automatically restarted from the script through cron.
GSSS was written becuase I wanted a way to start up a variety of games in a standard way. Then I also wanted to make sure the games stayed running even after a crash.
So I wrote this perl script. It will start games and through a cron job make sure they stay running. If you have qstat installed it can also verify the game is running like it is suppose to be and not in some strange state where no one can play.
If the game is running but unresponsive, it kills it and starts it again. You can also stop running games cleanly as well.
Games supported by "Game Server Startup Script":
- Quake2
- Quake3
- RTCW
- Half Life
- Unreal
- UT2K3
- UT2K4
- Tribes 2
- NWN
- BF1942
- ET
Enhancements:
- Very minor changes, minor readme changes, clean up

PVKII Linux Server is a dedicated server package for PVKII game. This is for hosting a dedicated server not for playing!

PVKII is a Halflife 2 Modification based on 3 teams from times past locked in a never-ending battle for wealth, dominance and power.

Pirates, Vikings & Knights II pits each team against one another in a variety of different scenarios enabling a varied, strategic, and fun gameplay. Each team has its overall strengths and weaknesses, as well as each member within those teams contributing special abilities for the success or failure of each goal.

Cooperation will lead you to victory and glory!

They will battle in territories familiar to them such as Medieval Castles, European Villages, Winter Landscapes, Grassy Plains, Sea Vessels, Catacombs, Sea Ports and more!

Immerse yourself in the PVKII world!

Stamits Online Poker project is a simple OpenGL poker game that can be played online with another person.

Compilation:

Make sure you have the GNU C and C++ compilers.

Get MOGUL, the Minimal OpenGL Utility Library, compile and install it (or use a compiled binary version, if there is one available). Instructions should be included.

Open `Makefile and uncomment the lines below the label `Unix configuration.

Say `make. The result should be an executable named `sopoker in the current working directory.

Sloth Online RPG is aJava Online RPG with Real-Time Action and rich 2D graphics.

Sloth Online RPG is a work in progress that will provide a fully graphical online role playing game engine. SlothORPG is coded in Java and is currently in a near playable state featuring several classes with over a thousand lines of code.

My main intentions with this project are to provide a free, fully functional, ever expanding Role Playing Engine (both client and server side) for the end user who would be playing the game. Developers would also be able to use the project as a resource on certain aspects of Java Game Programming.

Server side the project implements the NIO Networking library to create a smoother, stronger tcp/ip core. I found UDP and TCP w/ the old IO library to be unreliable and sluggish respectively. The way in which the server is structured has proven to be strong thus far.

The client side of the code features the Graphics2D Java library to provide near perfect animation without requiring a rendering device such as OpenGL or DirectX.

To summarize my entire intent for this project I basically wanted to provide an Online RPG that is functional on almost any OS that has Java installed and can run just as smooth on low end machines while still being able to feature rich 2-D graphics. The source code is clean and neat as well as commented and organized.

It is easy to read and understand for someone who has some knowledge of Java. As I write this, the project is coming along nicely and some pre-alpha local network testing has proven this. I plan to continue with this project and in the future include database integration and more of a developer-side interface.

A quick rundown of what this project includes so far: Character Creation, Smooth character animation, and fully supported tcp/ip gameplay. Chatting is also implemented.

PVKII Linux Server is a dedicated server package for PVKII game. This is for hosting a dedicated server not for playing!

PVKII is a Halflife 2 Modification based on 3 teams from times past locked in a never-ending battle for wealth, dominance and power.

Pirates, Vikings & Knights II pits each team against one another in a variety of different scenarios enabling a varied, strategic, and fun gameplay. Each team has its overall strengths and weaknesses, as well as each member within those teams contributing special abilities for the success or failure of each goal.

Cooperation will lead you to victory and glory!

They will battle in territories familiar to them such as Medieval Castles, European Villages, Winter Landscapes, Grassy Plains, Sea Vessels, Catacombs, Sea Ports and more!

Immerse yourself in the PVKII world!