Yggdrasil launches â,¬200,000 ‘Christmas Calendar’ campaignYggdrasil Gaming has rolled out a new campaign as part of an effort to boost engagement and retention over the festive season.
Source: Yggdrasil launches â,¬200,000 ‘Christmas Calendar’ campaign (http://www.igamingbusiness.com/news/yggdrasil-launches-200000-christmas-calendar-campaign)