Everest

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Everest is an open-source mod loader and modding API, making texture replacements, custom level sets and endless code mods a reality.

Install Everest before installing other mods. For a list of mods, visit GameBanana

If you've got any issues with Everest, we're in the #game_modding channel of this Discord server to help you:

Installing Everest

Windows auto-installer

• Download the latest installer .exe and run it.
• If Windows SmartScreen blocks it, tell it to run anyway.
• Follow the steps in the installer.

Cross-platform manual installation

• Download the latest autobuild (latest version, latest stable version). Click the "Artifacts" button on the top-right of the page, then "main" to download it.
• Extract the .zip's main folder to where Celeste is installed. Celeste.Mod.mm.dll should be right next to Celeste.exe
  • macOS: Right-click and browse the Celeste app in Finder, then naviagte to Contents, then MacOS.
• Delete the orig folder if it exists.
• Run MiniInstaller.exe
  • Linux / macOS: Install the mono runtime, open a terminal window where Celeste is and run mono MiniInstaller.exe

Features

In no specific order:

• In-game Everest updater
• Cross-version and cross-platform compatibility
• Easy mod support without messing with your original files
  • Code mods
  • Audio replacements and additions via custom FMOD banks
  • Graphic replacements and additions
  • Custom texts (f.e. map names, dialogues)
  • Custom maps
  • Your own content via the highly flexible mod content and hooking API
• Easily change hidden options in-game (debug mode and FMOD sync)
• Sound test
• Quality of life improvements:
  • Discord Rich Presence
  • Keyboard input when renaming your savegame
  • Info about saved and lost progress when returning to map
• Debug mode improvements:
  • F5 to reload the map .bin without losing progress
  • CTRL + F5 to quick-reload the entire game and all mods without losing progress
  • F6 to quickly open the leftover in-game map layout utility
  • . to open and q<enter> to close the command line on keyboards without tilde key
• Features for custom maps:
  • Unhardcoded Badeline chasers with custom ending barrier
  • Custom core messages and memorials without replacing the original texts / sprites
  • Session flag triggers
  • Restore beta "trigger spikes"
  • Unhardcoded dust entities for non-resort levels
  • Unhardcoded crystal colors
  • Two new cassette blocks: emerald and marigold
  • Stationary fireballs without crashing the game
  • Fixed rotating blade starting angle calculation
  • Auto-fix and auto-fill, f.e. strawberry order, checkpoints in menu, fixed screen wrap in space rooms
  • Map .meta.yaml for previously hardcoded properties, f.e. cassette song or default core mode
  • Custom chapter complete screens
• And many other smaller changes

Installing mods

• Find a mod you like on GameBanana
• Press the 1-click installation button.
  • If the 1-click installer doesn't work, put the mod .zip into the Mods directory where Celeste is.
  • For prototyping, feel free to use a folder instead of a .zip
• That's it. No need to extract anything.

Compiling Everest yourself

• If you just want to install Everest, go to Installing Everest.
• If you've previously installed Everest and updated Celeste or switched betas / branches, delete the orig directory where Celeste is installed.
  • macOS: Right-click and browse the Celeste app in Finder, then naviagte to Contents, then MacOS.
• Clone the Everest repo, either in your IDE, via the CLI, or by downloading the .zip from GitHub.
• Restore Nuget packages either via your IDE or the command line.

Windows

• Open the .sln in the repo with Visual Studio
• Build all
• Copy everything in MiniInstaller\bin\Debug and Celeste.Mod.mm\bin\Debug to your Celeste directory
• Run MiniInstaller.exe

macOS / Linux (no Nix)

• Install the mono runtime
• Build all
  • With MonoDevelop: Open the .sln in the repo with MonoDevelop
  • Manually: Open the terminal in the Everest directory and run msbuild or xbuild
• Copy everything in MiniInstaller/bin/Debug and Celeste.Mod.mm/bin/Debug to your Celeste directory
  • macOS: Celeste.app/Contents/MacOS
• Run mono MiniInstaller.exe

Nix

• Run nix-env -f . -iA everest in the Everest repo
• Wait for it to install
• Run miniinstaller ~/Celeste, where ~/Celeste is your Celeste path.
  • miniinstaller is a wrapper over the MiniInstaller.exe in the other methods.