1.Anticlove Anticlove is a free game for girls where you can experience a unique history in the world full of mysteries of the Palentir university. http://us.anticlove.com/
2.Battle Dawn Massively Multiplayer Strategy Game built with Flash, offering 2D graphics!Compete with thousands of others over the earth domination!
Free to play - optional premium packages http://www.battledawn.com/
3.Crossfire Crossfire is a highly graphical role-playing adventure game with characteristics reminiscent of Rogue, Nethack, Omega, and Gauntlet. It has multiplayer capability and presently runs under X11.
Free to play indefinitely. http://crossfire.real-time.com/
4.Daimonin 2d role playing game (RPG)
Client Size: 23MB
Daimonin was created in the year 2002 by using the Crossfire project source as a base. http://www.daimonin.org/
5.Dead Frontier Dead Frontier is a survival horror 2D MMORPG. Play with thousands of real players from around the globe as you struggle for survival in a zombie infested city.
6.Endless Online Endless-online is a place where you can become rich and famous, fight monsters and become a hero, or just live a normal peasant life as a citizen.
Free to play indefinitely. http://www.endless-online.com/
7.Fermi's Path In this action-loaded arcade game you play the role of Fermi, a particle on a terrific trip through subatomic space. http://www.fermis-path.com/
8.Forgotten Elements Forgotten Elements is a totally free realtime 2D Hack and Slay MMORPG and runs with JAVA. http://www.forgottenelements.com/
9.Furcadia Furcadia is the magical world where the animals have learned to walk upon two legs and speak. Create your own customizable avatar and start exploring the friendly, graphical environment with rich, player-driven content. Our established online community grew over years and has become a second home to many. Furcadia invites you to an interactive experience unlike any other.
Free to play indefinitely. http://www.furcadia.com/
10.Immortal Empire 2D Tactical Strategy RPG played in a web browser. No download required http://www.tacticstudios.com/empire
11.Maplestory Maple Story features cartoony characters in a fantasy MMORPG setting. Free to play
12.Queville Free to play. No downloads required. http://www.queville.com/
13.RPG MO Fight monsters and increase levels in 14 different skills. http://rpg.mo.ee/
14.SpaceShadows SpaceShadows is an online multiplayer space game. Explore and fight thousands of players, harvest, sell, and buy resources, board passengers towards other stations... Join a clan and make your presence felt. http://www.spaceshadows.com/
15.Titans of Time Titans of Time is a Free to Play 2D Browser Based MMORPG http://www.titansoftime.com/