"By" can be replaced with By. Maybe "In following" feels a bit awkward, but "Through following" works better. Let me adjust that. Alternatively, "By adhering" or "By heeding" might be more accurate, but the user wants three synonyms. Let me think of three that make sense in context.

First, I need to identify words in the text that can be replaced with three synonyms or alternatives. But the user specified "proper nouns stay," so words like "GTA," "San Andreas," "Android," "PPSSPP," and "PlayStation 2" shouldn't be altered.

I need to ensure that proper nouns like GTA San Andreas and PPSSPP remain unchanged. Let me double-check each replacement. Also, the user wants only the text output without any explanations. So the final answer should look clean, with proper formatting and correct spintax brackets. Let me put it all together now.

Also, check phrases like "native port" could be official port if that makes sense. However, the user mentioned proper nouns stay, so terms like "native port" are technical terms and might need to stay as is unless there's a suitable synonym.