Browser Based

All Out War: 4025
A space war game. Includes registration, signups, and a forum.
http://www.alloutwar.com/

Antrophia
The player controls a country and battles other players. Includes help and a chat.
http://www.antrophia.com/

Area00
A free air combat game. Offers a manual and FAQs, screenshots, and storyline.
http://www.area00.com/

Ashes of Angels
A space game where the player can become a trader, smuggler, or pirate. Includes missions, ship upgrades, and a forums.
http://portal.ashesofangels.com/

Astro Wars
Provides a forum, registration, rankings, and help.
http://www.astrowars.com/

BattleMaster
Includes a game manual, discussion, and character information.
http://www.battlemaster.org/

Bulfleet
A space-based attack and resource management game. Contains server statistics, screen shots, registration, and a forum. [Also in Bulgarian.]
http://www.bulfleet.com/

Call of Combat
Based on small-arms combat in WWII Europe. Furnishes player statistics, an FAQ, and a discussion forum.
http://www.callofcombat.com/

CritticAge
A free online browser based game. Includes forums.
http://www.critticage.com

Desktop Tower Defense
Strategy game where you have to protect your desktop from invaders by spending money on attacking pieces and building a maze for them to follow
http://www.handdrawngames.com/DesktopTD/Game.asp

Dogs of the Seas Pearl-Shop
Free pirate game set in the past with role playing elements. Features two interactive GUIs, chat, battles, trade, missions, and a forum.
http://www.dogsoftheseas.com/pearlshop/

Dominion
Take control of a plot of land in a medieval realm consisting of twenty different players. Includes help, registration, and a message board.
http://www.kamikazegames.com/dominion/

Droidarena
A pay-to-play game where players build virtual robots. Includes a manual, screenshots, and a forum.
http://www.droidarena.net/

Dystopia
Players use military and magic to take control. Furnishes a guide, rules, and a forum.
http://dystopia.woofcat.com

Ever Wars
Multi-player fantasy combat game with emphasis on player to player encounters.
http://everwars.com/

Faith
Includes a manual, game information, and chats and forums.
http://www.dragonclawstudio.com/faith/

Fall of Rome
RTS in which players compete against each other over the remnants of the (fallen) Roman Empire. Includes forums and documentation.
http://fallofromegame.com

Feudal Times
Medieval empire simulation: become a king, rule towns and armies. Includes alliances, forums, and trading.
http://feudal-times.net

Final Harbour
Take on the role of province leader. Includes news and a forum.
http://www.minxam.com/

Galactic Emperor: Hegemony
An empire building game of space conflict. Includes a forum, FAQs, and registration.
http://hegemony.skotos.net/

Galactic Empires
Command worlds and warships try to conquer the universe. Features a message board.
http://aus.ch/gen/

Galactic Imperia
Futuristic MMORTS of galaxy wars. Features a battle simulator, forums, and alliances.
http://www.galacticimperia.org

GoKrida
Mystic game about the five elemental races. Players live out multiple lifetimes while creating worlds of peace or war. Provides a tutorial, artwork, and signups.
http://gokrida.com/

Hexadome
Locate, capture, and hold the energy outlets spread throughout the landscape. Uses a graphical user interface.
http://hexadome.niemo.com/lobby/

Imperia Online
A medieval-based theme. Provides screen shots, game information, registration, and a forum.
http://www.imperiaonline.org/

Last Knights
Medieval MMORTS game that is based in Europe. Includes a forum, maps, wars, and customized troops.
http://lastknights.com

Mech Crusaders
Includes general information and signups.
http://www.mechg.com/

Mine Wars: Cincomm-9
Free online strategy game. Players develop bases through research and construction. Over 80 unit types and 30 research branches to explore. Custom built bases, clan wars.
http://www.minewars.net

Modern Conquest
Includes a tutorial, news, FAQs, and a forum.
http://www.modernconquest.de/main.php

Neveron
An empire-building game set in the 33rd century. Includes a manual and FAQs, membership information, ranks, and a forum.
http://www2.neveron.com/

OGame.org
Command a fleet. Contains rules, a forum, and screenshots.
http://www.ogame.org/

OGP
A glimpse at the underground. Provides registration and a forum.
http://66.98.213.178/

Ominix
Expand, build, train military units, trade in the world market, hack, spy or invade. Has a guide and forum.
http://www.ominix.com/

The Order of Atlas
Contains news, updates, data, and other material for Archspace and other games.
http://www.orderofatlas.com

Parallel Universe
A guild building game. Offers screenshots, and item, class, and race information.
http://pu.hypermutt.com/

Pure War
Emphasising fast-paced gameplay. Includes documentation, forums, screenshots and player scores.
http://purewar.com

Quantum Legacy: Initial Tactics
A 3D time travel game. Offers news, help, screenshots, and a discussion forum. [Shockwave required.]
http://quantumlegacy.com/

Queosia
Country management in the medieval era. Includes guides, registration page and forums.
http://queosia.com

Realms of Mayhem
Nation building from the copper age through the age of sail. Includes forums, screenshots, tutorials and a leaderboard.
http://www.realmsofmayhem.com

Realms of Rivalry
Medieval era. Includes instructions, forums, and statistics.
http://www.realmsofrivalry.org/

Reign Online
Persistent world with Empire management and battles. Has a classic version of the game available. Includes chat, forums, and documentation.
http://reigngame.com

Robostrike
Features high scores and game information. [Requires Flash]
http://www.robostrike.com/

Roman Quest
Gladiator themed multiplayer game. Registration required to play.
http://www.romanquest.com/

Space Conquest
An empire control game. Has a forum and rankings.
http://spaceconquest.plit.dk/

Space Empires
Includes news, an introduction and FAQ, and a forum.
http://www.skotos.net/games/hegemony/

Space Freight
Space based business game. Run a company that delivers cargo between planets.
http://spacefreight.net/

Space Victory
Only takes 5 minutes a day with two month rounds. Planets are won and lost through battles.
http://www.spacevictory.com

Spacecrime
Build, operate, and maintain a crime network. Includes high scores and a forum.
http://www.spacecrime.net/slangin/index.html

SpaceDomination
A space-based game. Offers help, news, and a forum.
http://www.spacedomination.com/

SpaceTrace
Rule and planet and build fleets of ships. Offers message board, online play, and manual.
http://www.spacetrace.org/

Star Kingdoms
Build a kingdom. Includes rules, wallpaper, help, and a forum.
http://www.starkingdoms.com/

Supremacy 1914
Real-time military strategy game. Screenshots, game manual, and FAQs.
http://www.diskussionsabend.de/

Travian
Build a successful town with competition from neighbors. Contains instructions, FAQ, chat, and forums.
http://www.travian.com/

Visual Utopia
Empire building game. Includes forums, documentation and a Java chatroom.
http://visual-utopia.com/

Warring Factions
A massively multiplayer space game.
http://www.war-facts.com/

Warzone Five
A battle game with map, news, rankings, and forum. The goal is to survive.
http://www.warzonefive.com/

Warzone Tower Defense
Flash based defend your base game with various defensive towers and weapons.
http://www.madcowinteractive.com/TDWarzone/

World Kit
Includes a forum, trivia quiz, and Java chatroom.
http://www.worldkit.com

World War 3
Furnishes news, statistics, player profiles, and a forum.
http://www.worldwar3.dk/

Worlds of War II
Second World War era. Includes forums, documentation and live 'state of the world' update.
http://www.worldsofwar.co.uk

Zaraz
Empire building game. Includes forums and documentation.
http://game.zaraz.com

ZeldereX Online
Wage war, research technologies, control armies and construct buildings in this free game. Includes forum, chat, manual and screenshots.
http://zelderex.com/