Can a game packaged for Windows run on Mac Parallels (for running Windows on a Mac)?

I sent an Alpha version of my game to some testers and one tried to run my Windows build on his Mac using Parallels but he only got an error when launching. Is there a way to make a game Parallels compatible? I know a lot of Windows games will run on Parallels. Thank you for your time.

If you are willing to make changes to support Parallels why not just make a Mac build? It seems far easier then targeting such a small subset of the market.

From your question I gather it would be a lot of work to get a game running on Parallels? From what I understand there are many Windows games which work in Parallels. I’m wondering if these games are not built in UE? I was expecting a “click this button” answer, but considering there are few replies and I could not find any documentation addressing the subject, I’ll drop it. Thanks for the reply Sudo-Kid.