Free multiplayer online fighting games software for linux

Wurm Online is 3D FPP MMORPG game.

Online multiplayer role-playing game, where players walk freely in a big 3D world chatting, gathering resources, building towns, making items, trading, fighting with other players and computer controlled creatures. Chose your path - crafting or PvP fighting. Join a village or live solo. Massive skill tree with skill affected by your actions.

Online Turnbased Wargame is a multi-user war game with multi-layer delegation. Logistics, production, and technology development is included. Creation of maps, scenarios, campaigns, Orders of Battle, and Tables of Equipment is also included in the scope
Enhancements:
- This release completes the move from a stand-alone application to being integrated as a plugin for the e107 CMS.
- Development will continue in this framework.

Regnum Online is a MMORPG game, that wants to invite you to join our world and play for free. The only thing we require is that you fight for your realm.
Regnum Online is a massive multiplayer online role playing game (MMORPG MMORPG) for the PC where the player are immersed in a 3D virtual world. There they can live as Elves, Humans Dwarves, or Dark Elves having exciting adventures, exploring the wild lands or joining an army of players to take on the other kingdoms armies."
The game is in beta stage, but already offers many quests, items, and monsters, not to mention the large number of both english-, spanish-, and portuguese-speaking players youll meet in-game.
Main features:
- Regnum offers 3 realms to choose from.
- 9 fully customizable player characters.
- Hundreds of quests.
- The ability to capture forts and castles.
- Expansive lands to explore.
- Glorious graphical environments.

Hot Potato Online is a fast paced arena sport game where players try to explode the opposition using a short-fused potato bomb. Think dodgeball with a grenade!
The generated environment can be used to bounce, corner, and surprise foes.
Main features:
- Up to 4 players
- Team play
- 3 match types fully configurable
- Single player training "bot"
- 4 types of tiles (ground, solid, bounce, holes)
- Lobby and in-game "emotes"
- Last game and total results
- Potato deflection
- Overtime for first position
- Fullscreen / Window options
- In-game music and sounds
Enhancements:
- Players can join games in progress
- Button clicks can be cancelled
- Updated version system
- MSVCP71.DLL part of installation
- Fixed bug where we could not click buttons in the lobby
- Music can again be turned off (was broken since v. 1.1.0)
- Players will see a black screen while waiting for other players.
- Fixed number of "Killed-KilledBy" when playing in teams.
- Linux specific updates
- Statically linked freeglut and glpng
- Ability to change from fullscreen to window mode and vice versa,
- Fixed crash on clients when the server leaves the game,
- Cursor can be moved while loading the lobby.

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.