Main Story:
* Continue the main story: You've now obtained one of the three Legendary Pokemon, so you can proceed with the main story and face the Elite Four and Champion.
* Challenge the post-game: After beating the main story, you can challenge the post-game content, including new trainers, rare Pokemon, and more.
Optional Activities:
* Complete the Pokedex: Giratina is a powerful addition to your team, but you'll need to catch other Pokemon to complete your Pokedex. This is a good time to focus on catching the remaining Pokemon you may be missing.
* Train your team: Giratina is powerful, but other Pokemon can also be strong and helpful. Training your team up to level 100 can be a fun and challenging goal.
* Explore the post-game areas: Several new areas open up after the main story, including the Distortion World, which is home to unique Pokemon and events.
* Battle other trainers: You can challenge the Elite Four and Champion repeatedly to test your skills. You can also battle friends or other trainers online to test your team and trade Pokemon.
* Breed Pokemon: You can breed Pokemon to create new, stronger Pokemon with different abilities.
Other Tips:
* Use the Distortion World: This world is accessible after catching Giratina and offers unique challenges and a chance to catch rare Pokemon.
* Trade with other players: You can trade Pokemon with other players to complete your Pokedex and gain new Pokemon.
* Level up your team: Remember to level up your team and teach them new moves. This will help you conquer the post-game challenges and become a true Pokemon master.
No matter what you choose to do, capturing Giratina is a significant achievement, and there's a lot to explore and experience after the main story in Pokemon Platinum. Enjoy the post-game adventure!