diff --git a/.github/workflows/build-validation.yml b/.github/workflows/build-validation.yml
index f858a73..29efc03 100644
--- a/.github/workflows/build-validation.yml
+++ b/.github/workflows/build-validation.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
     - name: Install dependencies
       run: |
-        brew install sdl2 libpng glew ninja
+        brew install sdl2 libpng glew ninja libzip
     - uses: actions/checkout@v2
     - name: ccache
       uses: hendrikmuhs/ccache-action@v1.2
@@ -34,7 +34,7 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y libsdl2-dev libpng-dev libglew-dev ninja-build
+        sudo apt-get install -y libsdl2-dev libpng-dev libglew-dev libzip-dev zipcmp zipmerge ziptool ninja-build
     - uses: actions/checkout@v2
     - name: ccache
       uses: hendrikmuhs/ccache-action@v1.2
diff --git a/.github/workflows/tidy-format-validation.yml b/.github/workflows/tidy-format-validation.yml
index 4ad7a93..5311827 100644
--- a/.github/workflows/tidy-format-validation.yml
+++ b/.github/workflows/tidy-format-validation.yml
@@ -10,7 +10,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libsdl2-dev libpng-dev libglew-dev ninja-build clang-tidy clang-format-12
+          sudo apt-get install -y libsdl2-dev libpng-dev libglew-dev libzip-dev zipcmp zipmerge ziptool ninja-build clang-tidy clang-format-12
       - uses: actions/checkout@v3
         with:
           fetch-depth: 2
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c71d708..e15e58b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,7 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Windows" AND USE_AUTO_VCPKG)
 	endif()
 
     vcpkg_bootstrap()
-    vcpkg_install_packages(zlib bzip2 sdl2 glew)
+    vcpkg_install_packages(zlib bzip2 sdl2 glew libzip)
 endif()
 
 add_subdirectory("extern")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index de1c2c6..6e56561 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -470,6 +470,9 @@ target_link_libraries(libultraship
     PUBLIC ZAPDUtils ImGui tinyxml2 nlohmann_json::nlohmann_json
 )
 
+find_package(libzip REQUIRED)
+target_link_libraries(libultraship PRIVATE libzip::zip)
+
 if (CMAKE_SYSTEM_NAME STREQUAL "Darwin" OR CMAKE_SYSTEM_NAME STREQUAL "NintendoSwitch")
     set(THREADS_PREFER_PTHREAD_FLAG ON)
     find_package(Threads REQUIRED)
diff --git a/src/resource/archive/Archive.cpp b/src/resource/archive/Archive.cpp
index 99d9096..926a660 100644
--- a/src/resource/archive/Archive.cpp
+++ b/src/resource/archive/Archive.cpp
@@ -26,7 +26,7 @@ Archive::~Archive() {
 }
 
 void Archive::Load() {
-    bool opened = LoadRaw();
+    bool opened = Open();
 
     auto t = LoadFileRaw("version");
     bool isGameVersionValid = false;
@@ -53,6 +53,7 @@ void Archive::Load() {
 }
 
 void Archive::Unload() {
+    Close();
     SetLoaded(false);
 }
 
@@ -103,9 +104,9 @@ void Archive::SetGameVersion(uint32_t gameVersion) {
     mGameVersion = gameVersion;
 }
 
-void Archive::AddFile(const std::string& filePath) {
+void Archive::IndexFile(const std::string& filePath) {
     if (filePath.length() > 5 && filePath.substr(filePath.length() - 5) == ".meta") {
-        AddFile(filePath.substr(0, filePath.length() - 5));
+        IndexFile(filePath.substr(0, filePath.length() - 5));
         return;
     }
 
diff --git a/src/resource/archive/Archive.h b/src/resource/archive/Archive.h
index d5d3d9f..8ca75e5 100644
--- a/src/resource/archive/Archive.h
+++ b/src/resource/archive/Archive.h
@@ -34,15 +34,15 @@ class Archive {
     const std::string& GetPath();
     bool IsLoaded();
 
-    virtual bool LoadRaw() = 0;
-    virtual bool UnloadRaw() = 0;
+    virtual bool Open() = 0;
+    virtual bool Close() = 0;
     virtual std::shared_ptr<File> LoadFileRaw(const std::string& filePath) = 0;
     virtual std::shared_ptr<File> LoadFileRaw(uint64_t hash) = 0;
 
   protected:
     void SetLoaded(bool isLoaded);
     void SetGameVersion(uint32_t gameVersion);
-    void AddFile(const std::string& filePath);
+    void IndexFile(const std::string& filePath);
 
   private:
     static std::shared_ptr<ResourceInitData> CreateDefaultResourceInitData();
diff --git a/src/resource/archive/O2rArchive.cpp b/src/resource/archive/O2rArchive.cpp
index 6acaf39..d5d5bf3 100644
--- a/src/resource/archive/O2rArchive.cpp
+++ b/src/resource/archive/O2rArchive.cpp
@@ -1,5 +1,6 @@
 #include "O2rArchive.h"
 
+#include "Context.h"
 #include "spdlog/spdlog.h"
 
 namespace LUS {
@@ -11,18 +12,76 @@ O2rArchive::~O2rArchive() {
 }
 
 std::shared_ptr<File> O2rArchive::LoadFileRaw(uint64_t hash) {
-    return nullptr;
+    const std::string& filePath =
+        *Context::GetInstance()->GetResourceManager()->GetArchiveManager()->HashToString(hash);
+    return LoadFileRaw(filePath);
 }
 
 std::shared_ptr<File> O2rArchive::LoadFileRaw(const std::string& filePath) {
-    return nullptr;
+    if (mZipArchive == nullptr) {
+        SPDLOG_TRACE("Failed to open file {} from zip archive {}. Archive not open.", filePath, GetPath());
+        return nullptr;
+    }
+
+    auto zipEntryIndex = zip_name_locate(mZipArchive, filePath.c_str(), 0);
+    if (zipEntryIndex < 0) {
+        SPDLOG_TRACE("Failed to find file {} in zip archive  {}.", filePath, GetPath());
+        return nullptr;
+    }
+
+    struct zip_stat zipEntryStat;
+    zip_stat_init(&zipEntryStat);
+    if (zip_stat_index(mZipArchive, zipEntryIndex, 0, &zipEntryStat) != 0) {
+        SPDLOG_TRACE("Failed to get entry information for file {} in zip archive  {}.", filePath, GetPath());
+        return nullptr;
+    }
+
+    struct zip_file* zipEntryFile = zip_fopen_index(mZipArchive, zipEntryIndex, 0);
+    if (!zipEntryFile) {
+        SPDLOG_TRACE("Failed to open file {} in zip archive  {}.", filePath, GetPath());
+        return nullptr;
+    }
+
+    auto fileToLoad = std::make_shared<File>();
+    fileToLoad->Buffer = std::make_shared<std::vector<char>>(zipEntryStat.size);
+
+    if (zip_fread(zipEntryFile, fileToLoad->Buffer->data(), zipEntryStat.size) < 0) {
+        SPDLOG_TRACE("Error reading file {} in zip archive  {}.", filePath, GetPath());
+    }
+
+    if (zip_fclose(zipEntryFile) != 0) {
+        SPDLOG_TRACE("Error closing file {} in zip archive  {}.", filePath, GetPath());
+    }
+
+    fileToLoad->Parent = dynamic_pointer_cast<Archive>(std::make_shared<O2rArchive>(std::move(*this)));
+    fileToLoad->IsLoaded = true;
+
+    return fileToLoad;
 }
 
-bool O2rArchive::LoadRaw() {
-    return false;
+bool O2rArchive::Open() {
+    mZipArchive = zip_open(GetPath().c_str(), ZIP_RDONLY, nullptr);
+    if (mZipArchive == nullptr) {
+        SPDLOG_ERROR("Failed to load zip file \"{}\"", GetPath());
+        return false;
+    }
+
+    auto zipNumEntries = zip_get_num_entries(mZipArchive, 0);
+    for (auto i = 0; i < zipNumEntries; i++) {
+        auto zipEntryName = zip_get_name(mZipArchive, i, 0);
+
+        IndexFile(zipEntryName);
+    }
+
+    return true;
 }
 
-bool O2rArchive::UnloadRaw() {
-    return false;
+bool O2rArchive::Close() {
+    if (zip_close(mZipArchive) == -1) {
+        SPDLOG_ERROR("Failed to close zip file \"{}\"", GetPath());
+        return false;
+    }
+
+    return true;
 }
 } // namespace LUS
diff --git a/src/resource/archive/O2rArchive.h b/src/resource/archive/O2rArchive.h
index 168f4f9..3d198d0 100644
--- a/src/resource/archive/O2rArchive.h
+++ b/src/resource/archive/O2rArchive.h
@@ -6,6 +6,8 @@
 #include <stdint.h>
 #include <string>
 
+#include "zip.h"
+
 #include "resource/File.h"
 #include "resource/Resource.h"
 #include "resource/archive/Archive.h"
@@ -18,12 +20,13 @@ class O2rArchive : virtual public Archive {
     O2rArchive(const std::string& archivePath);
     ~O2rArchive();
 
-    bool LoadRaw();
-    bool UnloadRaw();
+    bool Open();
+    bool Close();
     std::shared_ptr<File> LoadFileRaw(const std::string& filePath);
     std::shared_ptr<File> LoadFileRaw(uint64_t hash);
 
   protected:
   private:
+    zip_t* mZipArchive;
 };
 } // namespace LUS
diff --git a/src/resource/archive/OtrArchive.cpp b/src/resource/archive/OtrArchive.cpp
index 45b7c6f..dd93c0e 100644
--- a/src/resource/archive/OtrArchive.cpp
+++ b/src/resource/archive/OtrArchive.cpp
@@ -9,6 +9,7 @@
 
 namespace LUS {
 OtrArchive::OtrArchive(const std::string& archivePath) : Archive(archivePath) {
+    mHandle = nullptr;
 }
 
 OtrArchive::~OtrArchive() {
@@ -16,6 +17,11 @@ OtrArchive::~OtrArchive() {
 }
 
 std::shared_ptr<File> OtrArchive::LoadFileRaw(const std::string& filePath) {
+    if (mHandle == nullptr) {
+        SPDLOG_TRACE("Failed to open file {} from mpq archive {}. Archive not open.", filePath, GetPath());
+        return nullptr;
+    }
+
     HANDLE fileHandle;
     bool attempt = SFileOpenFileEx(mHandle, filePath.c_str(), 0, &fileHandle);
     if (!attempt) {
@@ -56,7 +62,7 @@ std::shared_ptr<File> OtrArchive::LoadFileRaw(uint64_t hash) {
     return LoadFileRaw(filePath);
 }
 
-bool OtrArchive::LoadRaw() {
+bool OtrArchive::Open() {
     const bool opened = SFileOpenArchive(GetPath().c_str(), 0, MPQ_OPEN_READ_ONLY, &mHandle);
     if (opened) {
         SPDLOG_INFO("Opened mpq file \"{}\"", GetPath());
@@ -79,13 +85,13 @@ bool OtrArchive::LoadRaw() {
         std::string_view line = lines[i].substr(0, lines[i].length() - 1); // Trim \r
         std::string lineStr = std::string(line);
 
-        AddFile(lineStr);
+        IndexFile(lineStr);
     }
 
     return opened;
 }
 
-bool OtrArchive::UnloadRaw() {
+bool OtrArchive::Close() {
     bool closed = SFileCloseArchive(mHandle);
     if (!closed) {
         SPDLOG_ERROR("({}) Failed to close mpq {}", GetLastError(), mHandle);
diff --git a/src/resource/archive/OtrArchive.h b/src/resource/archive/OtrArchive.h
index 424c2b8..9a69b7b 100644
--- a/src/resource/archive/OtrArchive.h
+++ b/src/resource/archive/OtrArchive.h
@@ -24,8 +24,8 @@ class OtrArchive : virtual public Archive {
     OtrArchive(const std::string& archivePath);
     ~OtrArchive();
 
-    bool LoadRaw();
-    bool UnloadRaw();
+    bool Open();
+    bool Close();
     std::shared_ptr<File> LoadFileRaw(const std::string& filePath);
     std::shared_ptr<File> LoadFileRaw(uint64_t hash);