Registration is back online! Posted on April 29, 2014April 29, 2014 by mysterium_admin | No Comments Apologies for the longer-than-intended downtime. It took more time than we anticipated to finish dealing with PayPal, but we’re back! Remember, pre-registration and t-shirt pre-orders close July 4th, so get your tickets now! Posted in Mysterium 2014, News, Registration.