Need ideas for a game for an onboarding portal!

I am currently building an onboarding portal to help assimilate our new hires into the organization. I am trying to think of a fun and easy game idea to integrate into the portal. I've thought of doing some sort of board game where the new hire travels to each section of the portal, but am looking for some ideas! I don't want to restrict navigation, as I want the new hire to be able to visit each section of the portal when they need, but will have a few required pieces in there (policies, etc).

Any ideas? Any examples you can share?