Empires Online II

An epic fantasy strategy war game set in real time. That means that it may take days to call up an army and weeks to fight a battle. A fun approach for those who want to put in a little strategic thought every day to wage vast wars that can last months.

Free to play indefinitely.

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.

Entropia Universe

Free science fiction RPG: "The Entropia Universe is more than a game. The Entropia Universe is for real. Real people, real activities and a Real Cash Economy in a massive online universe."

Free, with option to pay for additional features.

Eternal Lands

A 3D massively multiplayer RPG with animals, monsters, ships, magic, harvesting, manufacturing, guilds, and more.

Free to play indefinitely.

Eudemons Online

In this mythic world, you can choose to become a Warrior, Mage or Paladin. Command your heroes and eudemons to adventure on the vast land of Atlantis and challenge the power of sword and magic.

Free, with option to pay for additional features.

EUO

"EUO is a multiplayer online RPG inspired by the early Ultimas, Nethack, Diablo, gold-box AD&D, Magic Candle, etc."

Free to play indefinitely.

EVE Online

EVE is a sci-fi massively multiplayer online game. Players take the role of spaceship pilots seeking fame, fortune, and adventure in a huge, complex, exciting, and sometimes hostile galaxy.

Free trial period, then pay to continue playing.

Exteel

"A fully loaded futuristic shooter that puts you in control of heavily armored, completely customizable mechs. You'll cruise into combat, destroy your opponents and compete for total domination."

Free to play indefinitely.