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Everest
What it is
Everest is a free, open-source mod loader and modding API for Celeste. It enables custom map packs, texture replacements, and code mods that can add sound effects, graphics, dialogue, maps, and campaigns without altering original files. An in-game updater and dependency downloader help manage mods. Olympus is a cross-platform installer that can update itself and inject Everest code into Celeste.exe; it also offers one-click mod installs, with ZIP and folder installation as alternatives. Players can switch between Everest and vanilla Celeste from the title screen or Olympus. Enhanced Debug Mode includes live map reloading, shortcuts for reloading code and assets, an improved map viewer, and console logging. Everest runs on Windows, macOS, and Linux and works with Celeste from itch.io, Steam, and Epic Games, but not the Windows Store version. The project is MIT-licensed and maintained by volunteers. The project warns that Olympus is under active development and may fail; it directs users to the Celeste Discord’s #modding_help channel for reports and questions.
For and against
For
- Supports custom maps, texture replacements, and code mods.
- Includes an in-game updater and dependency downloader.
- Allows switching between modded and vanilla Celeste.
- Runs on Windows, macOS, and Linux.
- Olympus offers one-click mod installation.
Against
- Does not work with the Windows Store version of Celeste.
- Olympus may fail while under active development.
The verdict
Everest provides mod loading, installation, and debugging tools for Celeste across three desktop platforms. Confirm the game-store version is supported, and keep in mind the Olympus installer may fail.
Who it suits
Everest suits Celeste players who want to use community mods and mod creators building maps, assets, or code-driven content. Its listed game-store support excludes the Windows Store version of Celeste.
On the record
- Debugging
- Enhanced Debug Mode provides live map reloading, code and asset reload shortcuts, an improved map viewer and console logging.everestapi.github.io · read 1 Oct 2026
- Debug tools
- Enhanced Debug Mode includes live map reloading, rapid code and asset reloading, an improved map viewer, and console log output.everestapi.github.io · read 2 Oct 2026
- Game stores
- It works with itch.io, Steam and Epic Games, but does not work with the Windows Store.everestapi.github.io · read 1 Oct 2026
- Game versions
- The site says Everest works with the itch.io, Steam, and Epic Games versions of Celeste, but does not work with the Windows Store version.everestapi.github.io · read 2 Oct 2026
- Installation caveat
- The site warns that Olympus is actively worked on and may fail, and directs users to report bugs in the Celeste Discord server’s #modding_help channel.everestapi.github.io · read 2 Oct 2026
- Installer
- Olympus is described as a cross-platform Everest installer, and its website instructions cover Windows, macOS, and Linux.everestapi.github.io · read 2 Oct 2026
- Installer dependencies
- The Olympus repository lists LÖVE, dkjson, lua-yaml, nativefiledialog, libcurl, and other libraries among its dependencies.github.com · read 2 Oct 2026
- License
- The EverestAPI GitHub organization describes Everest as a public repository and identifies its license as MIT.github.com · read 2 Oct 2026
- Maintenance
- The repository says Everest is created, improved and maintained entirely by volunteers.github.com · read 1 Oct 2026
- Mod assets
- Mods can add sound effects, graphics, dialogue, maps, campaigns and code-driven content without altering original files.everestapi.github.io · read 1 Oct 2026
- Mod content
- Mods can add custom sound effects, graphics, character dialogue, maps, and campaigns.everestapi.github.io · read 2 Oct 2026
- Mod creation
- It supports custom map packs, texture replacements and code mods.everestapi.github.io · read 1 Oct 2026
- Mod distribution
- Olympus offers one-click mod installation from its Download Mods section or GameBanana, with ZIP and folder installation alternatives.everestapi.github.io · read 1 Oct 2026
- Mod downloads
- Players can find mods on GameBanana or in Olympus and install them with the one-click installer.everestapi.github.io · read 2 Oct 2026
- Mod management
- Everest includes an in-game updater and dependency downloader.everestapi.github.io · read 2 Oct 2026
- Purpose
- Everest is an open-source mod loader and modding API for Celeste.everestapi.github.io · read 1 Oct 2026
- Quality of life
- Listed quality-of-life features include help getting out of most softlocks, Discord Rich Presence, and keyboard-based save-file renaming.everestapi.github.io · read 2 Oct 2026
- Support
- The project directs users and mod developers to the Celeste Discord server, including the #modding_help channel.github.com · read 1 Oct 2026
