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Olympus - Everest Installer - A Modding Tool for Celeste

Olympus is an installer for the Everest mod loader and modding API for Celeste, enabling code mods, custom level sets and more.

Linux / macOS users, please follow the instructions on the Everest website.

Windows users, please continue on this page.

  • Your system will probably false-flag the patcher as a virus because it modifies Celeste.exe. If you don't trust us, check the source code.
  • If you've previously installed an old Everest installer, you'll need to redownload the newest installer (Olympus) from this page.

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

Olympus is a tool which lets you download Everest and mods easily, manage your Celeste installation(s) and stay up to date on important Celeste modding news.

Almost all other Celeste mods need you to install Everest first. Likewise, you need other mods to actually do something. Everest only enables other mods.

Take a look at the full feature list on the Everest website.

  • Agent_F4Z avatar
    Agent_F4Z Joined 9mo ago
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    Is there a certain beta I'm supposed to be using to open this? Whenever I open it on steam nothing changes. I've been using opengl since without it, the game won't open.
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  • OpenSauce avatar
    OpenSauce Joined 2y ago
    294 points Ranked 58,895th
    I accidentally thanked, but to be honest you guys deserve it. Incredible work.
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  • ForceofWill avatar
    ForceofWill Joined 2y ago
    2y 2y
    When I installed the mod, the game started to run slower, with fps drops. Don't know the main reason of that, but also tested in other pcs and I got the same result. (Even in " good" pcs the performance of the game is affected, of course is way way less)
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  • tom avatar
    tom username pic Joined 20y ago
    End Boss Ripe Supporter TBS2 Manager FNF Manager Super Admin
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    tom avatar
    End Boss
    3y 3y
    Thank you for the submit! Any chance we could add 1-click integration, so users can download, extract and install mods right out of the browser?
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