I think they use claude in some way. Not disclosed the degree, however. So, not sure if it's pure vibe-coded or just assisted (I'm not positioned on the topic and have a "debian-like" approach to it).

And I can understand that sometimes it can behave extremely randomly (modifying collections because in the client a platform is not synced, happened to me once).

But so far, the built-in emulator works really well for save/state sync, and now it can run 3DS (so it's a one less emulator to install).