Wikimedia Sverige was the first chapter to work with Europeana in an organized fashion, which was done as part of the Europeana Awareness project. A large part of the focus was on the digital collections gathered during the Europeana 1914-1918 campaign.
Basic infrastructure such as the template Institution:Europeana 1914-1918 was created by WMSE's staff to showcase the resources available from Europeana, and a first selection of more than 60 images were hand-picked and manually uploaded. These images formed the foundation for the that were organized in 2013 by Wikimedia Sverige in cooperation with eight local Wikimedia affiliates. This was one of the first attempts (the first?) to create thematic edit-a-thons across a continent.
To involve more volunteers and to find usage of the newly uploaded images the Europeana Challenge was organized. This was the first online contest organized together with Europeana.