diff --git a/Cargo.toml b/Cargo.toml
index 14f3fb2b..1eda8a21 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,8 @@ tauri-plugin-stronghold = { git = "https://github.com/tauri-apps/plugins-workspa
 tauri-plugin-window-state = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 tauri-plugin-single-instance = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 
+interpulse = { version = "0.1" }
+
 tracing = { version = "0.1" }
 tracing-subscriber = { version = "0.3", features = [
   "chrono",
@@ -59,6 +61,9 @@ tokio-stream = { version = "0.1", features = [ "fs" ] }
 async-recursion = { version = "1.1" }
 notify = { version = "6.1", default-features = false, features = [ "serde" ] }
 notify-debouncer-mini = { version = "0.4", default-features = false }
+regex = { version = "1.10" }
+sysinfo = { version = "0.30" }
+sys-info = { version = "0.9" }
 
 [profile.dev]
 # Make compilation faster on macOS
diff --git a/onelauncher/Cargo.toml b/onelauncher/Cargo.toml
index b522b5c5..4f01eb9a 100644
--- a/onelauncher/Cargo.toml
+++ b/onelauncher/Cargo.toml
@@ -18,6 +18,8 @@ cli = [ "dep:indicatif" ]
 tauri = { workspace = true, optional = true }
 indicatif = { workspace = true, optional = true }
 
+interpulse = { workspace = true }
+
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
 tracing-error = { workspace = true }
@@ -41,6 +43,9 @@ sha1 = { workspace = true }
 discord-rich-presence = { workspace = true }
 notify = { workspace = true }
 notify-debouncer-mini = { workspace = true }
+regex = { workspace = true }
+sysinfo = { workspace = true }
+sys-info = { workspace = true }
 
 [target.'cfg(windows)'.dependencies]
 winreg = { workspace = true }
diff --git a/onelauncher/src/error.rs b/onelauncher/src/error.rs
index 829d6247..005cbf8b 100644
--- a/onelauncher/src/error.rs
+++ b/onelauncher/src/error.rs
@@ -31,6 +31,10 @@ pub enum ErrorKind {
 	#[error("failed to parse uuids: {0}")]
 	UUIDError(#[from] uuid::Error),
 
+	/// Wrapper around [`interpulse::Error`] to handle interpulse errors.
+	#[error("metadata error: {0}")]
+	MetadataError(#[from] interpulse::Error),
+
 	/// Wrapper around [`serde_json::Error`] to handle Serde JSON parsing errors.
 	#[error("failed to manage serialization of json: {0}")]
 	SerdeError(#[from] serde_json::Error),
diff --git a/onelauncher/src/game/minecraft.rs b/onelauncher/src/game/minecraft.rs
index 217059f0..ae61228b 100644
--- a/onelauncher/src/game/minecraft.rs
+++ b/onelauncher/src/game/minecraft.rs
@@ -1,4 +1,7 @@
-use serde::{Deserialize, Serialize};
+use core::fmt;
+use std::{collections::HashMap, marker::PhantomData};
+
+use serde::{de::{self, SeqAccess, Visitor}, Deserialize, Deserializer, Serialize};
 use serde_json::Value;
 
 #[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
@@ -6,16 +9,17 @@ use serde_json::Value;
 pub struct MinecraftManifest {
 	pub asset_index: AssetIndex,
 	pub downloads: Downloads,
-	#[serde(rename = "id")]
-	pub version: String,
 	pub java_version: JavaVersion,
 	pub libraries: Vec<Library>,
 	pub logging: Logging,
 	pub main_class: String,
-	pub arguments: Arguments,
 	pub release_time: String,
+	#[serde(rename = "id")]
+	pub version: String,
 	#[serde(rename = "type")]
 	pub release_type: ReleaseType,
+	#[serde(skip_serializing_if = "Option::is_none")]
+	pub minecraft_arguments
 }
 
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
diff --git a/onelauncher/src/lib.rs b/onelauncher/src/lib.rs
index 2e6fa70e..723f92f5 100644
--- a/onelauncher/src/lib.rs
+++ b/onelauncher/src/lib.rs
@@ -1,4 +1,4 @@
-#![warn(unused_import_braces)]
+#![warn(unused_import_braces, missing_debug_implementations)]
 #![deny(unused_must_use)]
 
 pub mod auth;
diff --git a/onelauncher/src/utils/mod.rs b/onelauncher/src/utils/mod.rs
index 57a94ec7..26e01c88 100644
--- a/onelauncher/src/utils/mod.rs
+++ b/onelauncher/src/utils/mod.rs
@@ -1,3 +1,4 @@
 pub mod dirs;
 pub mod file;
 pub mod http;
+pub mod platform;
diff --git a/onelauncher/src/utils/platform.rs b/onelauncher/src/utils/platform.rs
new file mode 100644
index 00000000..ada4b4d8
--- /dev/null
+++ b/onelauncher/src/utils/platform.rs
@@ -0,0 +1,100 @@
+use interpulse::api::minecraft::{Os, OsRule};
+use regex::Regex;
+
+pub trait OsExt {
+    /// Get the OS of the current system
+    fn native() -> Self;
+
+    /// Gets the OS + Arch of the current system
+    fn native_arch(java_arch: &str) -> Self;
+}
+
+impl OsExt for Os {
+    fn native_arch(java_arch: &str) -> Self {
+        if std::env::consts::OS == "windows" {
+            if java_arch == "aarch64" {
+                Os::WindowsArm64
+            } else {
+                Os::Windows
+            }
+        } else if std::env::consts::OS == "linux" {
+            if java_arch == "aarch64" {
+                Os::LinuxArm64
+            } else if java_arch == "arm" {
+                Os::LinuxArm32
+            } else {
+                Os::Linux
+            }
+        } else if std::env::consts::OS == "macos" {
+            if java_arch == "aarch64" {
+                Os::OsxArm64
+            } else {
+                Os::Osx
+            }
+        } else {
+            Os::Unknown
+        }
+    }
+
+    fn native() -> Self {
+        match std::env::consts::OS {
+            "windows" => Self::Windows,
+            "macos" => Self::Osx,
+            "linux" => Self::Linux,
+            _ => Self::Unknown,
+        }
+    }
+}
+
+// Bit width
+#[cfg(target_pointer_width = "64")]
+pub const ARCH_WIDTH: &str = "64";
+
+#[cfg(target_pointer_width = "32")]
+pub const ARCH_WIDTH: &str = "32";
+
+// Platform rule handling
+pub fn os_rule(
+    rule: &OsRule,
+    java_arch: &str,
+    // Minecraft updated over 1.18.2 (supports MacOS Natively)
+    minecraft_updated: bool,
+) -> bool {
+    let mut rule_match = true;
+
+    if let Some(ref arch) = rule.arch {
+        rule_match &= !matches!(arch.as_str(), "x86" | "arm");
+    }
+
+    if let Some(name) = &rule.name {
+        if minecraft_updated
+            && (name != &Os::LinuxArm64 || name != &Os::LinuxArm32)
+        {
+            rule_match &=
+                &Os::native() == name || &Os::native_arch(java_arch) == name;
+        } else {
+            rule_match &= &Os::native_arch(java_arch) == name;
+        }
+    }
+
+    if let Some(version) = &rule.version {
+        if let Ok(regex) = Regex::new(version.as_str()) {
+            rule_match &=
+                regex.is_match(&sys_info::os_release().unwrap_or_default());
+        }
+    }
+
+    rule_match
+}
+
+pub fn classpath_separator(java_arch: &str) -> &'static str {
+    match Os::native_arch(java_arch) {
+        Os::Osx
+        | Os::OsxArm64
+        | Os::Linux
+        | Os::LinuxArm32
+        | Os::LinuxArm64
+        | Os::Unknown => ":",
+        Os::Windows | Os::WindowsArm64 => ";",
+    }
+}
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 2bb64d9d..156b51a9 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -16,6 +16,8 @@ tauri-build = { workspace = true }
 [dependencies]
 onelauncher = { path = "../onelauncher", features = [ "tauri" ] }
 
+interpulse = { workspace = true, features = [ "bincode" ] }
+
 tauri = { workspace = true }
 tauri-plugin-shell = { workspace = true }
 tauri-plugin-window-state = { workspace = true }