Lunia Open Beta Client. You will need to create an account here in order to play. This is a open beta, so please check the official Lunia Forums for further help after installation or other problems.
IMPORTANT: After installation, if you try to run the game and nothing happens (the window will close but the game doesn't start), follow the following directions as your version of Windows may have to install some additional files. Your Windows installation CD is required.
go to control panel
select regional and language options
at the bottom check "East Asian Languages"
Follow the directions from your Windows software