Free multiplayer game software for mac

Samus game is A small game where you are Samus or anti-Samus and try and shoot the other.

It is still somewhat buggy so yeah. This is also a really old game I made a long time ago so do not expect me to do any updates. Samus is trademarked by Nintendo.

Requirements:
Mac OS 8.0 or later.

Enhancements:
Version 5.0.1 fixes many bugs.

The Restaurant Game is a research project at the MIT Media Lab that will algorithmically combine the gameplay experiences of thousands of players to create a new game.

In a few months, we will apply machine learning algorithms to data collected through the multiplayer Restaurant Game, and produce a new single-player game that we will enter into the 2008 Independent Games Festival.

The Restaurant Game is a greta oportunity because every player will be credited as a Game Designer. Its never been easier to earn Game Designer credentials!

All contributions are not equal, however. Designers will be ranked based on how well they play their assigned roles, and accomplish their objectives. There will be only one Lead Designer.
Remaining credits will be divided into Game Designers and Assistant Game Designers, and within each category individuals will be ranked according to the quality of their performance(s).

Quality will be determined computationally, based on a number of factors.

The Restaurant Game takes about 10 minutes to play. It is a two-player game that will automatically find partners for players once you join a server. You are welcome encouraged to play multiple times.

In order for this project to be at all successful, we will need to collect a lot of data -- data from over 1,000 10,000 gameplay sessions. Play early, play often, and please spread the word!

This project attempts to address two frustrations I experienced as a professional game developer.
1) Convincing human social behavior is difficult to model with existing hand crafted AI systems.
2) Play testing by people outside of the development team typically comes too late to have a major impact on the final product.

This experiment aims to generate AI behaviors that conform to the way players actually choose to interact with other characters and the environment; behaviors that are convincingly human because they capture the nuances of real human behavior and language.

JDuplicate is an online multiplayer word game. It was build to support several word games and is language independent: games can be played in English, French, or any other occidental alphabet based language. New games modes are being added as development advances.
The official JDuplicate code branch is 100% Java.
JDuplicate consists in a server, and at least one client.
A client connects to a server gets a list of the currently available games, and joins or spectates one. A game can be joined at any time, unless the game creator decides that all players are to start even (at the same time, because players joining a running game will have turns, thus points, missing).
Enhancements:
- enhanced stability,
- improved graphic user interface,
- cyrillic support,
- native OSX client,
- UTF8 support for dictionaries
- numerous enhancements and bugfixes.