It's not a virus. A friend of mine had a similar experience trying to run a different game made in the engine a while ago, so I think it might be an issue caused by it being a custom engine. Do note that I'm not an expert on the issue, but my collaborator is asleep at the moment, so I'm responding what I know just to clarify.
I'm sorry to hear that you are unable to play our game, but thank you for letting us know. I hope the rest of your jam experience is lovely. :)