The Creation Lab was a part of the LEGO Universe website that allowed users to post creations for various challenges. These creations were used as inspiration for LEGO Universe's creators during its early stages. Once LEGO Universe was released, the Creation Lab had various competitions, such as the Nexus Force Championship. The final few challenges were separated into two age groups: 12 and under, and 13 and older. This was to create fairness in the way the creations were judged. Users of the Creation Lab signed in with their LEGO ID and could post creations, comment on creations, and participate in contests. Users could upload image files (.gif, .jpg), video files (.mov, .avi, .mpg, .wmv ) and LEGO Digital Designer files (.LXF).