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kurve*online is a java-based multiplayer snake game ("Achtung, die kurve!" - clone)
It will support singleplayer with AI bots, multiplayer on 1 pc+keyboard, online multiplayer or a combination of those 3.
It is a minimaly multiplayer role-playing game that tries to reproduce an actual Pen&Paper game, through massive use of dialog between players and a game master. The main universe is loosely based on an french MP3 adventure, "Le donjon de Naheulbeuk".
TaroTux is a 4 players Tarot game developed in Java and aimed to provide a free and original penguin-like interface for any platform (in French & English). Current features : game against 3 AIs, multiplayer game, some help on Tarot playing.
JDuplicate is a free client/server multiplayer word game suite. It is multilingual and supports popular word games such as Duplicate and Scrabble(TM). The server and default client are written in Java; clients for KDE, OSX and Win32 are being tested.
Island is a Serverless LAN Based Instant Messaging Tool that reaches anyone in the same subnet by using TCP/IP broadcast notifications. There is no need to add contacts since all of them are there.
This project features an online multiplayer, turn-based game, influenced by Worms and Scorched Earth. We are starting this as a project for Software Engineering class, in Computer Science, at Universidad Complutense, in Madrid.
Forgotten Wild War is a Real-Time-Strategy (RTS) game written in Java (so it is cross-platform). Various humanoid unity, vehicule unity, and obstacle belong to the environnement, and several players can play together via LAN or Internet.
SimpleGameNet is a framework for an arbitrary amount of diverse multiplayer game modules. It provides distributed game and player state management, chatting, etc. Several games are included, such as Chess, Dice and ConnectALine.
A web based, Massively multiplayer, nation simulation game coded entirely in Java. Includes: diplomacy, economics, and an enorumus geo-political simulation.
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An action-packed multiplayer Macross (Robotech) game where the key focus is on the valkyrie fighters. Glory to the brave! (Robotech:Glory is also a beginner developers learning platform. Welcome!) IN PLANNING
A classic Tetris clone. It is written in C++. Expected future features: local multiplayer game, multiplayer games through LAN, high-score list, powerups, different difficulty levels, background music.
Tokratan is an open source free multiplayer graphical online role playing game, set in a fantasy universe. In this phase of development we focus on the engine and not yet on game content. Server and client are writen in Java, a MySQL database is used.
Real-time multiplayer strategy game written in Java. It works on almost every operating system (Windows, Linux, MacOS). It is not an ordinary rts. It's more similar to turn-based games (like Master of Orion) than rts (like Command and Conquer).
This is a real-time-stratagy game, similiar to Command & Conquer, Starcraft, and Total Annihilation. This game is multiplayer only, with LAN support for up to 12 players.
Old versions are in Java, new versions will be in C++/Windows.
JMOG (JavaMultiplayer Online Gaming) is a free, open-source, Java-based server for MMORPGs (Massively-Multiplayer Online Role-Playing Games). The goal of JMOG is not to create a game itself, but a framework upon which anyone can develop a MMORPG.
IM Café is a complete solution for deploying a private (LAN/WAN) Instant Messaging System. It is made of a Server (IMCafeServer.jar) and a Client (IMCafeClient.jar) application and it was completely written in Java.
HART (The HAlo Respawn Timer) is a utility designed to aid those playing multiplayer Halo by timing the games, and providing visual and audio alerts when selected weapons and power-ups are about to respawn.
Spontane is a 2d fast-paced fighting game, for play on your local computer, LAN, or Internet, on any OS which runs Java. Similar to Nintendo's Super Smash Bros.
WiFiMon is a GUI-utility, based on the output of the iwconfig-command, which shows detailed information about the current status of a Wireless Network (LAN)
Killer Instinct is a 2D shoot-em-up tank game with Internet/LANmultiplayer support.
Written in C# and uses .NET Framework v1.1 with Managed DirectX 9.0 with 2003 Summer Update.
SocketSwitchboard is a virtual proxy, router, or VPN. It uses an XML configuration to map incoming traffic on one or more ports to designated hosts and ports on the LAN or on the Internet. It supports complex boolean access restrictions and SSL.