Pros:
* Encourages physical activity: The Poké Walker encourages walking and steps, making it a fun way to get active.
* Catches Pokémon: You can catch and train Pokémon in the Poké Walker that you can then transfer to your main game.
* New Pokémon and items: The Poké Walker has exclusive Pokémon and items that you can't find in the main game.
* Simple and portable: It's a small, lightweight device that's easy to take with you anywhere.
* Nostalgia factor: For fans of the original games, it's a nostalgic throwback.
Cons:
* Limited features: The Poké Walker is a very simple device with limited features compared to modern games.
* Compatibility: It only works with certain games (Diamond, Pearl, Platinum, HeartGold, and SoulSilver).
* Not essential: You don't need a Poké Walker to enjoy the main game, it's purely an optional extra.
* Limited Pokémon: You can only catch a limited number of Pokémon in the Poké Walker.
Overall:
The Poké Walker is a fun and engaging way to add extra content to your Pokémon game, but it's not essential. It's a great option if you enjoy physical activity and want to catch some extra Pokémon, but it's not for everyone.
If you're looking for a more robust and feature-rich experience, modern Pokémon games offer much more in terms of gameplay and content.
Ultimately, whether the Poké Walker is "good" depends on your individual preferences and what you're looking for in a Pokémon experience.