37. "Blue", "Sapphire", and "HeartGold" are all subtitles of which popular handheld series?
From Quiz Video Games By Subtitles
Answer:
Pokemon
The "Pokemon" series, originally released on the Game Boy, has been known to release new versions of the game with coloured subtitles differentiating between versions. Starting with "Red" and "Blue" in North America, titles have since included "Gold", "Silver", "Sapphire", "Ruby", "Platinum", and more. "Pokemon" is a Nintendo-owned franchise in which players catch, train, and battle creatures found around the game world in order to become a Pokemon Master. "Pokemon" has since spawned a sprawling series of games, a TV show, books, and merchandise.