Bust-A-Move 2 (USA) on Beetle PSX, Beetle PSX HW, SwanStation, PCSX-ReARMed and PCSX1, each frame reviewed on its PNG. A boot needs a screen of the game: the BIOS screens alone are not one.
core_probe writes record version 4. Each run is boots, bios_error, crash, hang or unknown, from reference frames, core error patterns and screens, and the process status. A crash or a timeout is a verdict now, rebuilt from the events the worker streamed. --vary accepts @zeros:SIZE and @head:SIZE:PATH, and run takes --repeat.