: Users typically extract the zip folder and add the executable to a launcher. For the Steam Deck , this often involves right-clicking the executable and selecting "Add to Steam".

content into specific "ports" directories, often requiring additional libraries like to be manually added for sound to function correctly. Retro Game Corps Troubleshooting Common Issues Celeste SDL2 compatibility issue on wayland #716 - GitHub

Celeste uses SDL2. Install the 32-bit version:

The main game binary is usually named Celeste or Celeste.bin.x86_64 . Make it executable:

Celeste doesn't launch at all, weird exceptions thrown #11805 - GitHub