The playable build should be checked through its current rooms, movement, attacks, enemies, power-ups, transitions, and objectives. Build 0.8.4.2 can contain experimental changes, incomplete assets, or route differences, so comparison must use the exact project version and ROM.

Use a separate save set from 0.8.1, save before modified rooms, and record the build number with every report. Test repeatability after a restart, distinguish an unfinished screen from a frozen emulator, and do not import states across builds unless compatibility is verified.