...what makes the game here and our participation in it even more complicated - for those who live with notions of good and evil, which notions are just illusions, personal illusions that have no value in the outside world.

Notions of good and evil are not illusions - nevertheless they cannot be proofed in a scientific way. That's why we are invited to distinguish between knowing, conjecturing, and believing. The possibility to freedom and to goodness is a strong personal believe (or not), but no illusion. (An illusion is something against facts. Freedom and Goodness are no facts.)