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Fuji: A Celeste 64 Mod Loader

Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.

More info about Fuji can be found here

We're also on Discord, join us!

The original game can be found here

Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc... It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.

Installation

See the installation instructions here

Contributing

See the Contributor's Guide for a quick start.

Building

See SETUP.md for build instructions.

License

  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.

About

Celeste 64 Mod Loader

Resources

Readme
Activity
Custom properties

Stars

36 stars

Watchers

5 watching

Forks

13 forks
Report repository

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
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Fuji: A Celeste 64 Mod Loader
Fuji is a basic Mod Loader for Celeste 64: Fragments of the Mountain, a game made by the original Celeste developers in under 2 weeks for Celeste's 6th Anniversary. It is forked from the source code of that game.
More info about Fuji can be found here
We're also on Discord, join us!
The original game can be found here
Fuji is still very early in development, but is currently able to load custom levels alongside the main game, as well as loading additional assets such as custom models, custom dialog, custom textures, etc...
It also implements some new functionality like custom skins, and the ability to load code mods from DLLs.
Installation
See the installation instructions here
Contributing
See the Contributor's Guide for a quick start.
Building
See SETUP.md for build instructions.
License
  • The Celeste IP and everything in the Content folder are owned by Maddy Makes Games, Inc.
  • The Source folder, with exceptions where noted, is licensed under MIT.
  • The Source/Audio/FMOD folder contains bindings and binaries from FMOD.
  • This mod loader is adapted from Celeste 64's Source code, but it is not made or endorsed by the game's creators.
About
Celeste 64 Mod Loader
Resources
Readme
Activity
Custom properties
Stars
36 stars
Watchers
5 watching
Forks
13 forks
Report repository
Releases
Packages
Contributors
Languages