diff --git a/src/platforms/modrinth/modrinth-unfeature-mode.ts b/src/platforms/modrinth/modrinth-unfeature-mode.ts
new file mode 100644
index 0000000..c351e82
--- /dev/null
+++ b/src/platforms/modrinth/modrinth-unfeature-mode.ts
@@ -0,0 +1,292 @@
+import { asArray, asArrayLike, isIterable } from "@/utils/collections";
+import { Enum, EnumOptions } from "@/utils/enum";
+import { VersionType } from "@/utils/versioning";
+import { UnfeaturableModrinthVersion } from "./modrinth-version";
+
+/**
+ * Represents the modes for unfeaturing Modrinth versions.
+ *
+ * @partial
+ */
+enum ModrinthUnfeatureModeValues {
+    /**
+     * No unfeature mode.
+     */
+    NONE = 0,
+
+    /**
+     * Unfeature mode for game version subset.
+     */
+    GAME_VERSION_SUBSET = 1,
+
+    /**
+     * Unfeature mode for version intersection.
+     */
+    GAME_VERSION_INTERSECTION = 2,
+
+    /**
+     * Unfeature mode for any version.
+     */
+    GAME_VERSION_ANY = 4,
+
+    /**
+     * Unfeature mode for version type subset.
+     */
+    VERSION_TYPE_SUBSET = 8,
+
+    /**
+     * Unfeature mode for version type intersection.
+     */
+    VERSION_TYPE_INTERSECTION = 16,
+
+    /**
+     * Unfeature mode for any version type.
+     */
+    VERSION_TYPE_ANY = 32,
+
+    /**
+     * Unfeature mode for loader subset.
+     */
+    LOADER_SUBSET = 64,
+
+    /**
+     * Unfeature mode for loader intersection.
+     */
+    LOADER_INTERSECTION = 128,
+
+    /**
+     * Unfeature mode for any loader.
+     */
+    LOADER_ANY = 256,
+
+    /**
+     * Unfeature mode for a subset of game versions, loaders, and version types.
+     */
+    SUBSET = GAME_VERSION_SUBSET | VERSION_TYPE_SUBSET | LOADER_SUBSET,
+
+    /**
+     * Unfeature mode for an intersection of game versions, loaders, and version types.
+     */
+    INTERSECTION = GAME_VERSION_INTERSECTION | VERSION_TYPE_INTERSECTION | LOADER_INTERSECTION,
+
+    /**
+     * Unfeature mode for any game version, loader, or version type.
+     */
+    ANY = GAME_VERSION_ANY | VERSION_TYPE_ANY | LOADER_ANY,
+}
+
+/**
+ * Options for configuring the behavior of the ModrinthUnfeatureMode enum.
+ *
+ * @partial
+ */
+const ModrinthUnfeatureModeOptions: EnumOptions = {
+    /**
+     * `ModrinthUnfeatureMode` is a flag-based enum.
+     */
+    hasFlags: true,
+
+    /**
+     * The case should be ignored while parsing the unfeature mode.
+     */
+    ignoreCase: true,
+
+    /**
+     * Non-word characters should be ignored while parsing the unfeature mode.
+     */
+    ignoreNonWordCharacters: true,
+};
+
+/**
+ * Determines if the given unfeature mode is the "none" mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the mode is "none"; otherwise, `false`.
+ */
+function isNone(mode: ModrinthUnfeatureMode): boolean {
+    return mode === ModrinthUnfeatureMode.NONE;
+}
+
+/**
+ * Determines if the given unfeature mode is a subset mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the mode is a subset mode; otherwise, `false`.
+ */
+function isSubset(mode: ModrinthUnfeatureMode): boolean {
+    return (
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.GAME_VERSION_SUBSET) ||
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.VERSION_TYPE_SUBSET) ||
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.LOADER_SUBSET)
+    );
+}
+
+/**
+ * Determines if the given unfeature mode is an intersection mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the mode is an intersection mode; otherwise, `false`.
+ */
+function isIntersection(mode: ModrinthUnfeatureMode): boolean {
+    return (
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.GAME_VERSION_INTERSECTION) ||
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.VERSION_TYPE_INTERSECTION) ||
+        ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.LOADER_INTERSECTION)
+    );
+}
+
+/**
+ * Determines if the given unfeature mode is an "any" mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the mode is an "any" mode; otherwise, `false`.
+ */
+function isAny(mode: ModrinthUnfeatureMode): boolean {
+    return !isSubset(mode) && !isIntersection(mode);
+}
+
+/**
+ * Retrieves the version-specific unfeature mode from the composite unfeature mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns The version-specific unfeature mode.
+ */
+function getGameVersionMode(mode: ModrinthUnfeatureMode): ModrinthUnfeatureMode {
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.GAME_VERSION_SUBSET)) {
+        return ModrinthUnfeatureMode.GAME_VERSION_SUBSET;
+    }
+
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.GAME_VERSION_INTERSECTION)) {
+        return ModrinthUnfeatureMode.GAME_VERSION_INTERSECTION;
+    }
+
+    return ModrinthUnfeatureMode.GAME_VERSION_ANY;
+}
+
+/**
+ * Retrieves the version type-specific unfeature mode from the given composite unfeature mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns The version type-specific unfeature mode.
+ */
+function getVersionTypeMode(mode: ModrinthUnfeatureMode): ModrinthUnfeatureMode {
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.VERSION_TYPE_SUBSET)) {
+        return ModrinthUnfeatureMode.VERSION_TYPE_SUBSET;
+    }
+
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.VERSION_TYPE_INTERSECTION)) {
+        return ModrinthUnfeatureMode.VERSION_TYPE_INTERSECTION;
+    }
+
+    return ModrinthUnfeatureMode.VERSION_TYPE_ANY;
+}
+
+/**
+ * Retrieves the loader-specific unfeature mode from the given composite unfeature mode.
+ *
+ * @param mode - The unfeature mode.
+ *
+ * @returns The loader-specific unfeature mode.
+ */
+function getLoaderMode(mode: ModrinthUnfeatureMode): ModrinthUnfeatureMode {
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.LOADER_SUBSET)) {
+        return ModrinthUnfeatureMode.LOADER_SUBSET;
+    }
+
+    if (ModrinthUnfeatureMode.hasFlag(mode, ModrinthUnfeatureMode.LOADER_INTERSECTION)) {
+        return ModrinthUnfeatureMode.LOADER_INTERSECTION;
+    }
+
+    return ModrinthUnfeatureMode.LOADER_ANY;
+}
+
+/**
+ * Determines if the `previous` value satisfies the given unfeature condition.
+ *
+ * @param previous - The previous value.
+ * @param current - The current value.
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the `previous` value satisfies the given unfeature condition; otherwise, `false`.
+ */
+function satisfies<T>(previous: T, current: T, mode: ModrinthUnfeatureMode): boolean {
+    if (isAny(mode)) {
+        return true;
+    }
+
+    // If the provided items are scalars, the only way the could intersect with each other
+    // or one be a subset of another is for them to be strictly equal.
+    // This way we cover both possibilities at the same time.
+    if (!isIterable(current) || !isIterable(previous)) {
+        return current === previous;
+    }
+
+    const currentArray = asArray(current);
+    if (isSubset(mode)) {
+        return asArrayLike(previous).every(x => currentArray.includes(x));
+    }
+
+    // isIntersection(mode) === true
+    return asArrayLike(previous).some(x => currentArray.includes(x));
+}
+
+/**
+ * Determines if the `previous` version should be unfeatured based on the given unfeature mode.
+ *
+ * @param previous - The previous version.
+ * @param current - The current version.
+ * @param mode - The unfeature mode.
+ *
+ * @returns `true` if the `previous` version should be unfeatured based on the given unfeature mode; otherwise, `false`.
+ */
+function shouldUnfeature(previous: UnfeaturableModrinthVersion, current: UnfeaturableModrinthVersion, mode: ModrinthUnfeatureMode): boolean {
+    if (previous.id === current.id) {
+        return false;
+    }
+
+    const gameVersionMode = getGameVersionMode(mode);
+    const versionTypeMode = getVersionTypeMode(mode);
+    const loaderMode = getLoaderMode(mode);
+
+    return (
+        satisfies(previous.game_versions || [], current.game_versions || [], gameVersionMode) &&
+        satisfies(previous.version_type || VersionType.RELEASE, current.version_type || VersionType.RELEASE, versionTypeMode) &&
+        satisfies(previous.loaders || [], current.loaders || [], loaderMode)
+    );
+}
+
+/**
+ * A collection of methods to work with ModrinthUnfeatureMode.
+ *
+ * @partial
+ */
+const ModrinthUnfeatureModeMethods = {
+    isNone,
+    isSubset,
+    isIntersection,
+    isAny,
+    getGameVersionMode,
+    getVersionTypeMode,
+    getLoaderMode,
+    shouldUnfeature,
+};
+
+/**
+ * Represents the modes for unfeaturing Modrinth versions.
+ */
+export const ModrinthUnfeatureMode = Enum.create(
+    ModrinthUnfeatureModeValues,
+    ModrinthUnfeatureModeOptions,
+    ModrinthUnfeatureModeMethods,
+);
+
+/**
+ * Represents the modes for unfeaturing Modrinth versions.
+ */
+export type ModrinthUnfeatureMode = Enum<typeof ModrinthUnfeatureModeValues>;