Game elements can motivate, and they can also borrow the worst habits of gambling. The rules Ludoran follows: rewards are earned by effort, chance only ever picks a cosmetic, and there's no money, no loss and no shaming.
Participation shouldn't only reward the fastest or loudest people in the room. How Ludoran shares turns fairly, gives quiet students ways in, and recognises different kinds of contribution.
Moodle records logins and submissions. It doesn't see who turns up to class and takes part. Ludoran is built for that hour in the room, and sits beside Moodle rather than replacing it.