Besides joining others in praising the game for its engaging combination of horror elements and game mechanics (with its Silent-Hill-esque atmospheric horror, and actions within both the real and arcade worlds influencing eachother), I'd like to state that I personally sense potential for an entire horror game series/franchise built around these Janitor games, not unlike Five Nights At Freddy's, Bendy and the Ink Machine, and Poppy Playtime.
Perhaps any future installments of this game series/franchise would feature exploring through various abandoned settings (such as a games store, an apartment complex, or an office building) in order to track down cartridges for a whole series/franchise of these haunted "Janitor" games, along with appropriate consoles to play them on (such as on the Atari 2600, NES, SEGA Genesis, PlayStation, PC, GameBoy, GameBoy Advance, and even mobile phones to name a few), and with them, an expansion of the lore (perhaps told by audio recordings and/or notes) behind the horrifying presence that's been inhabiting these games, and luring in and devouring any victims that play them (such as, for example, the original game developer, after finishing programming the arcade game, tragically having his soul sacrificed and made into the titular "Janitor" character by evil cultists, whom he had made a deal with the devil with during game development, only for a profit-seeking corporation to then acquire the IP for the Janitor arcade game after the developer's mysterious and suspicious death/disappearance, and use the Janitor IP to develop further Janitor games on various platforms, and through these games, spreading the curse even further)?
Heck, I could even see potential for an ARG to arise, if there's interest in developing more games in the same universe as Janitor Bleeds.