Everest
everestapi.github.io
What it is
Everest is a free, open-source mod loader and modding API for Celeste. It lets players use mods with custom maps, texture replacements and code-driven additions such as sound effects, graphics, dialogue and campaigns, without changing original game files. An in-game updater and dependency downloader help manage mods. The cross-platform Olympus installer can install mods with one click from its Download Mods section or GameBanana, or from ZIP files and folders; players can also switch between Everest and vanilla Celeste through Olympus or the title screen. Everest supports Windows, macOS and Linux and works with Celeste from itch.io, Steam and Epic Games, but not the Windows Store version. Enhanced Debug Mode offers live map reloading, code and asset reload shortcuts, an improved map viewer and console logging. The project is MIT-licensed and maintained by volunteers. Olympus is actively being worked on and may fail, and the project directs users to the Celeste Discord’s #modding_help channel for bug reports and questions.
Spec sheet
- Purpose
- Everest is an open-source mod loader and modding API for Celeste.Read 1 Oct 2026 · everestapi.github.io
- Support
- The project directs users and mod developers to the Celeste Discord server, including the #modding_help channel.Read 1 Oct 2026 · github.com
- License
- The EverestAPI GitHub organization describes Everest as a public repository and identifies its license as MIT.Read 2 Oct 2026 · github.com
- Debug tools
- Enhanced Debug Mode includes live map reloading, rapid code and asset reloading, an improved map viewer, and console log output.Read 2 Oct 2026 · everestapi.github.io
- Debugging
- Enhanced Debug Mode provides live map reloading, code and asset reload shortcuts, an improved map viewer and console logging.Read 1 Oct 2026 · everestapi.github.io
- Game stores
- It works with itch.io, Steam and Epic Games, but does not work with the Windows Store.Read 1 Oct 2026 · everestapi.github.io
- 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.Read 2 Oct 2026 · everestapi.github.io
- 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.Read 2 Oct 2026 · everestapi.github.io
- Installer
- Olympus is described as a cross-platform Everest installer, and its website instructions cover Windows, macOS, and Linux.Read 2 Oct 2026 · everestapi.github.io
- Installer dependencies
- The Olympus repository lists LÖVE, dkjson, lua-yaml, nativefiledialog, libcurl, and other libraries among its dependencies.Read 2 Oct 2026 · github.com
- Maintenance
- The repository says Everest is created, improved and maintained entirely by volunteers.Read 1 Oct 2026 · github.com
- Mod assets
- Mods can add sound effects, graphics, dialogue, maps, campaigns and code-driven content without altering original files.Read 1 Oct 2026 · everestapi.github.io
- Mod content
- Mods can add custom sound effects, graphics, character dialogue, maps, and campaigns.Read 2 Oct 2026 · everestapi.github.io
- Mod creation
- It supports custom map packs, texture replacements and code mods.Read 1 Oct 2026 · everestapi.github.io
- Mod distribution
- Olympus offers one-click mod installation from its Download Mods section or GameBanana, with ZIP and folder installation alternatives.Read 1 Oct 2026 · everestapi.github.io
- Mod downloads
- Players can find mods on GameBanana or in Olympus and install them with the one-click installer.Read 2 Oct 2026 · everestapi.github.io
- Mod management
- Everest includes an in-game updater and dependency downloader.Read 2 Oct 2026 · everestapi.github.io
- Quality of life
- Listed quality-of-life features include help getting out of most softlocks, Discord Rich Presence, and keyboard-based save-file renaming.Read 2 Oct 2026 · everestapi.github.io
- Support and documentation
- The Everest wiki offers community-written guides, tutorials, reference pages, and troubleshooting information, and invites users to ask questions in the Celeste Discord.Read 2 Oct 2026 · github.com
- Supported platforms
- The site lists Windows, macOS, and Linux as supported platforms.Read 2 Oct 2026 · everestapi.github.io
- Supported systems
- Everest runs on Windows, macOS and Linux.Read 1 Oct 2026 · everestapi.github.io
- Switching modes
- Players can switch between Everest and vanilla Celeste from the title screen or Olympus.Read 2 Oct 2026 · everestapi.github.io
- Updater
- It includes an in-game updater and dependency downloader.Read 1 Oct 2026 · everestapi.github.io
- Vanilla switching
- Users can switch between Everest and vanilla Celeste from the title screen or Olympus.Read 1 Oct 2026 · everestapi.github.io
- Verification
- The feature list describes Everest as TASBot-verified.Read 1 Oct 2026 · everestapi.github.io
- What it is
- Everest is an open-source mod loader and modding API for Celeste.Read 2 Oct 2026 · everestapi.github.io
- Who it is for
- Everest lets Celeste players and mod creators use custom maps, texture replacements, and code mods.Read 2 Oct 2026 · everestapi.github.io
Strong points and limits
Strong points
- Adds maps, campaigns, graphics, sound and code mods.
- Includes an in-game updater and dependency downloader.
- Switch between modded and vanilla Celeste.
- Enhanced Debug Mode supports live map reloading.
Limits
- Does not support the Windows Store version of Celeste.
- Olympus may fail while under active development.
Who it suits
Everest suits Celeste players who want custom maps, visual or audio changes, and code mods, as well as creators building that content. Its store-version support and operating-system coverage are worth checking before installation.
Verdict
Everest combines mod loading, mod management and debugging tools for Celeste across Windows, macOS and Linux. Check your Celeste store version first, and note the Olympus installation caveat.
Where Specifiction places it
- Game Mod Loaders#8 of 267.9