The upcoming MMORPG called Lorencia's Tales - Untold Stories has put up a free to play demo on their Weendie-Games studio Gamejolt page! So far there is one rating which gave them a great start with a "Perfecto" status!
The studio lists the game on the page with an added note stating this game is a Mu Online Remake. If you miss that game, this may be just what you have been waiting for!
There is a video for you to check out before you download, as well as, screenshots for you to check out. Nothing like a free demo to let you see just how interested in a game you will be, am I right? Besides, the demo is only 249MB; your computer won't even notice it's installed!