Editor's Note: When originally reported, we indicated MU Legend would be closing. This is our error. It is MU Origin that is closing, though the facts of the closure remain the same. MU Legend's service will remain in operation.
Original, corrected story: Webzen has announced that it is cutting service for MU Origin in The Netherlands as a result of the Dutch Gaming Authority's ruling against in-game loot boxes. Beginning June 20th, MU Origin will "no longer be able to be searched or downloaded on The Netherlands' Google Play Store and Apple App Store". The game will remain available in all other regions where it is currently out.
However, We will continue providing the latest version of MU Origin through both App markets in all service regions beside the Netherlands, and MU Origin can still be downloaded and played. Furthermore, it will be able to access and play the game regardless of the region if the latest version of MU Origin distributed by Webzen is installed on the device. We are deeply sorry for any inconvenience which it may cause, and always thank you for playing.
Source: MU Origin forum