Knikkegen is a city in Central Europe, southeast of Van Gotterdam. It is the hometown of Rima from Team Primary. It is also the city where brothers Jelle and Dion Bakker are based. Here they started the Knikkegen Marble League, a regional marble sports competition held in the stadium, the Bakker Bowl. During the mid-2010s, the KML grew in popularity attracting the attention of Greg Woods who ran the Fruit Circuit. In late 2014, Woods met the Bakker brothers and they began planning an expansion to the KML that would add an international league. In 2015 this plan was expanded further to the entire tournament, becoming the Marble League. The Bakker Bowl hosted Marble League 2016 and 2017 before competing teams started to host the competition.
During Marble League 2018, a snowstorm hit Hailfern, the host city of the competition, triggering an avalanche that destroyed the host stadium, the Arctic Circle. Upon surveying the damage, the Bakker brothers and the IMC decided to move the final event, the Sand Mogul Race, to the Bakker Bowl as a temporary stadium.
- Knikkegen is a mix of words between "knikker", the Dutch word for "marble", and Nijmegen, the home city for the Bakker brothers.