It is not compatible with The Sims 4 Outdoor Retreat, but installing it won’t affect the challenge. This challenge is designed for The Sims 4 Get To Work and was created before any future expansion pack release. This challenge is designed for The Sims 4 and is not compatible with any other game in the series
TO START THE CHALLENGE, THESE ARE THE REQUIREMENTS If you are interested in becoming an official editor, working on the challenge then please contact me privately and we can go into further discussion. THE SIMS 4 BUILD A CITY CHALLENGE OFFICIAL RULES, VERSION 1 -All comments with suggestions and error notifications as well as properties in-game that may be iniquity to the genuine challenge are always read and recorded for further discussion, you will be notified and credited if your ideas are added to the challenge and if you report any errors, please keep all ideas and errors genuine and authentic we don't any doppelganger comments in the comment section.