Make sure the tone is polite and informative. Don't come off as judgmental but clearly state the policy and support legitimate solutions.
I should make sure my response is clear and helpful, not just a rejection. Provide steps they can take and explain the importance of supporting developers. Avoid technical jargon to keep it accessible.
Also, offer resources where they can obtain the game legally. Maybe mention digital storefronts like Origin, Steam (if available), or other platforms. If the game isn't on those, suggest alternatives or similar games they can purchase instead.
Wait, the game is from 2010. Maybe they found an old copy or a cracked version online. I should mention the risks of using pirated software, like malware, and the benefits of buying a genuine copy.