The number 6 is key. Most versions of the game feature a roster of six playable characters, often including:
Players take on the role of a researcher (often modeled after Mayuri Kurotsuchi) conducting "experiments." Menu-Driven Progression: Bleach Circle Eden 6 Flash Gamel
Originally developed for Adobe Flash , though it is now primarily played via Flash emulators (like Ruffle) or standalone "Flash game preserves". Developer: Circle Eden (a doujin/independent game circle). The number 6 is key