Fallen Sword is the only web-based MMORPG I ever liked... Because it got a lot of features. Here is the intro :
You are about to embark upon a grand adventure, so prepare yourself for battle. You will be questing for great rewards in exotic locations like the Burning Abyss, the Crystal Cavern, the Dreg Marshes, and the Elya Desert. You will meet fearsome creatures such as scorpions, ogres, vampires, goblins, snakes, and golems. You will be facing great elite fighters and champions around every turn. Kill the right creature, and you might find an item of inestimable value. Join a guild and work with your fellow players to achieve goals unreachable by yourself alone. Do all this, and in time you too will become a legendary warrior.
The FallenSword universe is massive, consisting of hundreds of distinct locations, each of which is filled with unique and frightening foes. You will be able to buy, loot, and trade thousands of items, but choose carefully: Your success in battle will be fully dependent upon your choices of equipment. You only have space for a few items, so fill them wisely. You will earn gold through killing creatures, attacking other players, and trading in the Auction House. Plus, you can earn and use FallenSword Points to enable you to upgrade your character beyond mortal limits. (Don't be scared on that lol it's so easy to make them in-game :P)
And I added that :
One thing that I really like in this game is that a Guild can have his own storage where you can put really rare equips and tag them. By tagging them they are bound to the guild but other people can still take them. BUT the master of the guild (or the ones that have access to it) can take back the equips whenever they want and they have a complete list of all the equips the guild have and who have them atm. In other words this game can be REALLY generous if you get yourself in a guild because you can take any set that is available in the storage (including legendary things and all) which make you super pwnzor.
While being in a guild you can also make a group. The group system in this game is unique since there are only 1:1 battles. So instead of fighting a monster with people, by entering in the group they add half of their stats to you (and they still have it) so... Thats godly O.O.
I think I said all what is needed to know on the game
if you want to register here is the link :