For the phrase "improved graphics, new features, and a nostalgic gaming experience," "improved" could be upgraded, "new" as updated, and "nostalgic" as sentimental.
Wait, the user's exact words are: "keep names intact. Only the result." So perhaps in this current task, after reworking each word with three synonyms, they want to make sure that any proper nouns (brand names, game titles) remain unchanged, but the example shows that the game title is split into parts with alternatives. So perhaps the user wants even the game title to be reworked.
"Must-play" could be "essential|recommended|top-tier". "Game" might be "title|video game|interactive experience". "Fans" could become "enthusiasts|devotees|admirers". "Original" can be "classic|initial|original". "New" might be "novice|fresh|newcomer". "Players" could be "gamers|users|participants". "Alike" can be "equally|together|similarly".
Another thing to watch out for is phrases that are common in gaming, like "side missions." The synonym for "side" could be "bonus|secondary|additional," but "missions" should be replaced with "quests|objectives|tasks."