The MMORPG TERA from En Masse Entertainment now has a free seven-day trial. Once you have downloaded the trial, you can create up to eight characters with a max level cap of 23 (max level is 60).
With the help of Gaikai’s cloud gaming service TERA is now available to play for free for thirty minutes in your internet browser. It’s instant to try out.
I would try it out but be warned the game is subscription based with no substance and its pretty boring.