Here's what you'll find in GameSpot's Pokemon Platinum Primer Guide: ... You will often have to acquire a new gym badge before you can use the HM abilities outside of combat, however.

Pokemon GO trainers who favor particular gyms may notice a diamond-shaped badge on their trainer menu. These are known as gym badges, and they provide some good benefits to those who keep ...

When you get to 30, 500 and 2,000 captured Pokemon, no matter the type or how many types you've caught them, you are rewarded with this badge. Catch every Pokemon you see to get this award faster.

Pokémon Go Gym Badges can be levelled up to get extra rewards and XP.. Introduced during the game's Gym rework update in 2017, Gym Badges incentivise players to return to and improve specific ...

And there are loads of them. 493 are available in Platinum, although many are accessible only via inter-DS trading. The bulk of the gameplay consists of strolling around, battling wild Pokémon ...