After defeating Ganon in The Legend of Zelda: Breath of the Wild, you cannot continue the main storyline. However, there are plenty of activities and quests you can continue to enjoy in the expansive world of Hyrule. Here’s what you can do:

1. Return to the Title Screen
After defeating Ganon and completing the final boss fight, the game will return you to the main title screen. This is because there is no conventional post-game content in Breath of the Wild.

2. Check Your Save File
A star icon will now appear next to your save file indicating that you’ve defeated Ganon. This doesn’t mean your adventure is over; it just means you’ve completed the main storyline.

3. Explore Side Quests
Many side quests in Breath of the Wild remain available after defeating Ganon. These quests offer more insight into the lore and characters in the game. You can now complete any side quests you might have missed, which will enrich your understanding of Hyrule.

4. Find Hidden Shrines and Korok Seeds
There are 120 shrines and 900 korok seeds hidden throughout Hyrule. Now is the perfect time to seek them out if you haven’t found them all yet. These shrines and seeds provide additional challenges and rewards.

5. Master Trials
The Master Trials are part of the DLC pack where Link can undertake difficult combat trials. Completing these trials can power up your master sword, adding more depth to your gameplay experience.

6. Champions Ballad
The Champions Ballad is another part of the DLC pack that offers additional lore, challenges, and an extremely useful new mode of transportation. This content extends your gameplay experience beyond the main storyline.

7. Percentage Completion Counter
After defeating Ganon, a percentage completion counter is unlocked, showing how much of the game you’ve truly completed. This includes locations discovered, quests completed, and the aforementioned shrines and korok seeds.

8. DLC Packs
If you have purchased DLC packs, you can continue playing through these additional quests and challenges. These packs offer new storylines, characters, and gameplay mechanics that extend your adventure in Hyrule.

Conclusion
While beating Ganon marks the end of the main storyline in Breath of the Wild, there is still a vast world of exploration and challenges waiting for you. The true joy of this game is in the journey, not the destination. So, get back out there and continue your adventure in Hyrule.