Considering the larger Pokémon continuity, Game Boy Color's Pokémon Trading Card Game is a bit of an oddball. It's clearly a spinoff, with game mechanics that are significantly different from the main series. On the other hand, it retains the "one kid trying to catch 'em all" vibe that tends to be absent from other spinoffs, making it a much easier sell if you're a fan of the gameplay found on regular Pokémon games.
