Runescape is the right one.

Runescape, a well-known browser MMORPG
Runescape is a massive multiplayer adventure, with monsters to kill, quests to complete, and treasure to win. You control your own character who will improve and become more powerful the more you play. The game is multiplayer which means you will meet many other people in the world who you communicate and trade with.

If you dont like RS, you can find more to choose in

Combat Arms is really good, it’s just a counter strike clone. Also Battlefield Heroes will be coming out this year, I can’t wait for that. They are both fully fledged 3D shooters.

I love 9dragons, its great, got good graphics, awsome gameplay and a good clan system (you pick out of 8 clans when you make your character)

heres the website:

good luck

play lunia on lunia.ijji.com
you need windows and internet explorer though