While the hackers who figured out how to do this must be feeling pretty chuffed with themselves, it seems that Nintendo had figured out that hackers would eventually find their way into the system and have actually left a message behind for them. Basically the message acknowledges the hack and even predicted that running custom ROMs was probably the main intention and all they are asking is that the hackers don’t “break” anything in the process.
The message reads, “This is the hanafuda captain speaking. Launching emulation in 3…2…1. Many efforts, tears and countless hours have been put into this jewel. So, please keep this place tidied up and don’t break everything! Cheers, the hanafuda captain.” Given how fiercely Nintendo protects their IPs, it is rather surprising to see a relatively playful message from the company, although that’s actually a good thing rather than a bad thing.
That being said, the current hack to get custom ROMs on the NES Classic is a rather complicated process and has the potential to brick the console, so do proceed with caution.