LOST Extreme is a browser-based RPG which is free to sign up for, based in the world of LOST. You can basically re-enact the series - explore the island, challenge the smoke monster (one of the ways to level up), encounter the Others, chat with other survivors, join the DHARMA Initiative, visit Jacob's Cabin, and much more. It's a new game, and more features are being added almost every day.
Please come check it out if you're interested - it's pretty fun:
lostextreme.net
