One business game that we often do is Dub Your Movie, where we split participants into two groups, give each group a short movie clip from an action movie and ask them to rewrite the dialogues but talking about their workplace, and then dub it live in front of the other team - it's super fun, a great way to talk about pain points and work challenges while de-dramatising and relieving tension.
We also use the Lego Serious Play *insert link method: we get people to brainstorm with their hands, this method works incredibly well for brainstorming about value propositions, business models, and operating models because it enables us to create 3D models of our ideas, physically see all the links and patterns, boost creativity, unlock group genius and truly share a vision. We also design tailor-made role-play activities that are centric to your business.