Background & release model
In emulation terminology, a is a digital dump of a game cartridge. An "exclusive" usually refers to content locked to a specific platform or build.
What to look for if researching (legal, non-infringing)
While an official Nintendo ROM exclusive doesn't exist, the modding community has created de facto exclusives that run on emulators and hacked Switches. These are often more exciting than the official BCP.
