Pokémon TCG had a Game Boy sequel that never released outside Japan - and we've played it | Dicebreaker
This Pokémon game revolutionized the series — but its sequel never came stateside - Polygon
Pokémon Trading Card Game Review (Game Boy Color) | Nintendo Life
Dr. Lava on Twitter: "Lost Pokemon Cards: The Pokemon TCG game on Game Boy Color included 208 cards from the real-life card game, but also featured 18 cards exclusive to the GBC.
Pokemon Trading Card Game 2 (Gameboy Color GBC) - Walmart.com