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).
Go here to read more about my thoughts about the game and game streaming:
There is also a TERA demo available with no downloads needed. Some stats have also been released. Since its release: over 22 million signature monsters have been killed; over 227 million miles have been traveled, and players play TERA an average of around 4.5 hours per day.
Go to the official website to try the game out if you want.