What Are The Masterblock Rules?

We appreciate all kinds of creativity in Masterblocks, however there are a few basic rules.  Please do not make any Masterblocks which contain the following:  

  • Letters
  • Numbers
  • Offensive imagery
  • Imagery or items not appropriate for children under 13
  • Bedroom furniture, showers/baths or guns
  • Items meant to be used to be mean or offensive to other Jammers.
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