Title should be “Steam-less games?”. The word capitalization and the spacing between “Steam” and “Less” makes no sense at all. Also, including double question-marks is over-the-top, as though your request were urgent. Its games what you’re asking for, not some medicine. Get a grasp on grammar.
What if the key was in a book? It would have to be protected by free-speech, which makes it uncensorable.
What if the key contents were used as hex values to make a flag? Would you censor a flag too?
No such thing as “proprietary encryption keys” exist.