I need to expand the collection of groups that I’m working with to test this new style of Challenge. If you’re part of a group that wants to complete your city together as a team, reply here with an emoji of your choice and I’ll get in touch privately.
Collaborative Challenges are a new style that combines the efforts of all the members to collectively work towards finishing your city. Internally, the Collaborative Challenge also tracks individual progress - so you can still have that in-group competition to see who’s contributing the most towards the overall goal.