diff --git a/core/libs/prx/libSceMouse/CMakeLists.txt b/core/libs/prx/libSceMouse/CMakeLists.txt
new file mode 100644
index 000000000..76b0c4fe8
--- /dev/null
+++ b/core/libs/prx/libSceMouse/CMakeLists.txt
@@ -0,0 +1,22 @@
+add_library(libSceMouse SHARED EXCLUDE_FROM_ALL
+    ${CMAKE_CURRENT_SOURCE_DIR}/Export.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/mouse_impl.cpp
+)
+target_include_directories(libSceMouse PRIVATE ${LIBS_INCLUDE_DIR})
+set_target_properties(libSceMouse PROPERTIES CXX_EXTENSIONS OFF)
+configure_windows_unwind(libSceMouse)
+
+if(BUILD_TESTING)
+    add_executable(mouse_tests
+        ${CMAKE_CURRENT_SOURCE_DIR}/tests/Mouse.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/../libSceVideoOut/src/MouseInput.cpp
+    )
+    target_include_directories(mouse_tests PRIVATE ${LIBS_INCLUDE_DIR} ${CMAKE_SOURCE_DIR}/3rdparty/SDL2/include)
+    target_link_libraries(mouse_tests PRIVATE libSceMouse libkernel libc)
+    configure_windows_unwind(mouse_tests)
+    add_test(NAME mouse_input COMMAND mouse_tests)
+    if(WIN32)
+        set_tests_properties(mouse_input PROPERTIES ENVIRONMENT_MODIFICATION
+            "PATH=path_list_prepend:$<TARGET_FILE_DIR:libSceMouse>")
+    endif()
+endif()
diff --git a/core/libs/prx/libSceMouse/Export.cpp b/core/libs/prx/libSceMouse/Export.cpp
index 5e6120682..9d820d245 100644
--- a/core/libs/prx/libSceMouse/Export.cpp
+++ b/core/libs/prx/libSceMouse/Export.cpp
@@ -1,36 +1,25 @@
-#include <cstdint>
-#include <cstddef>
-#include "SceTypes.hpp"
-#include "prx/libc/include/General.hpp"
+#include "prx/libSceMouse/include/MouseState.hpp"
 
 extern "C" {
 
-int APS5_VABI sceMouseClose(int32_t handle) {
- (void)handle;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+int APS5_VABI sceMouseInit() {
+    return Mouse::Initialize();
 }
 
-int APS5_VABI sceMouseInit(void) {
- NotImplemented_nid_no_patch(__func__);
- return 0;
+int APS5_VABI sceMouseOpen(int userId, std::int32_t type, std::int32_t index, const void* param) {
+    return Mouse::Open(userId, type, index, static_cast<const MouseOpenParam*>(param));
 }
 
-int APS5_VABI sceMouseOpen(int user_id, int32_t type, int32_t index, const void* param) {
- (void)user_id;
- (void)type;
- (void)index;
- (void)param;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+int APS5_VABI sceMouseClose(std::int32_t handle) {
+    return Mouse::Close(handle);
 }
 
-int APS5_VABI sceMouseRead(int32_t handle, MouseData* data, int32_t num) {
- (void)handle;
- (void)data;
- (void)num;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+int APS5_VABI sceMouseRead(std::int32_t handle, MouseData* data, std::int32_t num) {
+    return Mouse::Read(handle, data, num);
+}
+
+void MousePublishInput_nid_postfix(const MouseInputEvent& event) {
+    Mouse::Publish(event);
 }
 
 }
diff --git a/core/libs/prx/libSceMouse/include/MouseState.hpp b/core/libs/prx/libSceMouse/include/MouseState.hpp
new file mode 100644
index 000000000..bf7d57a09
--- /dev/null
+++ b/core/libs/prx/libSceMouse/include/MouseState.hpp
@@ -0,0 +1,28 @@
+#ifndef CORE_LIBS_PRX_LIBSCEMOUSE_MOUSESTATE_HPP
+#define CORE_LIBS_PRX_LIBSCEMOUSE_MOUSESTATE_HPP
+
+#include "prx/libSceMouse/include/mouse_structs.h"
+
+struct MouseInputEvent {
+    std::int32_t x = 0;
+    std::int32_t y = 0;
+    std::int32_t wheel = 0;
+    std::int32_t tilt = 0;
+    std::uint32_t button = 0;
+    bool pressed = false;
+    bool resetButtons = false;
+    bool connectionChange = false;
+    bool connected = true;
+};
+
+namespace Mouse {
+int Initialize();
+int Open(int userId, std::int32_t type, std::int32_t index, const MouseOpenParam* param);
+int Close(std::int32_t handle);
+int Read(std::int32_t handle, MouseData* data, std::int32_t num);
+void Publish(const MouseInputEvent& event);
+}
+
+extern "C" void MousePublishInput_nid_postfix(const MouseInputEvent& event);
+
+#endif
diff --git a/core/libs/prx/libSceMouse/include/mouse_structs.h b/core/libs/prx/libSceMouse/include/mouse_structs.h
new file mode 100644
index 000000000..30c7d3a8f
--- /dev/null
+++ b/core/libs/prx/libSceMouse/include/mouse_structs.h
@@ -0,0 +1,34 @@
+#ifndef CORE_LIBS_PRX_LIBSCEMOUSE_MOUSE_STRUCTS_H
+#define CORE_LIBS_PRX_LIBSCEMOUSE_MOUSE_STRUCTS_H
+
+#include <cstddef>
+#include <cstdint>
+#include "SceTypes.hpp"
+
+struct MouseOpenParam {
+    std::uint8_t behaviorFlag;
+    std::uint8_t reserved[7];
+};
+
+constexpr int MOUSE_OK = 0;
+constexpr int MOUSE_ERROR_INVALID_ARG = static_cast<int>(0x80df0001u);
+constexpr int MOUSE_ERROR_INVALID_HANDLE = static_cast<int>(0x80df0003u);
+constexpr int MOUSE_ERROR_ALREADY_OPENED = static_cast<int>(0x80df0004u);
+constexpr int MOUSE_ERROR_NOT_INITIALIZED = static_cast<int>(0x80df0005u);
+constexpr int MOUSE_MAX_DATA_NUM = 64;
+constexpr int MOUSE_HANDLE = 1;
+constexpr std::uint8_t MOUSE_OPEN_PARAM_MERGED = 1;
+
+static_assert(sizeof(MouseOpenParam) == 8);
+static_assert(sizeof(MouseData) == 40);
+static_assert(alignof(MouseData) == 8);
+static_assert(offsetof(MouseData, timestamp) == 0);
+static_assert(offsetof(MouseData, connected) == 8);
+static_assert(offsetof(MouseData, buttons) == 12);
+static_assert(offsetof(MouseData, x_axis) == 16);
+static_assert(offsetof(MouseData, y_axis) == 20);
+static_assert(offsetof(MouseData, wheel) == 24);
+static_assert(offsetof(MouseData, tilt) == 28);
+static_assert(offsetof(MouseData, reserved) == 32);
+
+#endif
diff --git a/core/libs/prx/libSceMouse/src/mouse_impl.cpp b/core/libs/prx/libSceMouse/src/mouse_impl.cpp
new file mode 100644
index 000000000..5bcf78e72
--- /dev/null
+++ b/core/libs/prx/libSceMouse/src/mouse_impl.cpp
@@ -0,0 +1,106 @@
+#include "prx/libSceMouse/include/MouseState.hpp"
+#include "prx/libkernel/Time/include/Time.hpp"
+
+#include <algorithm>
+#include <array>
+#include <mutex>
+
+namespace {
+std::mutex mouseMutex;
+std::array<MouseData, MOUSE_MAX_DATA_NUM> history{};
+int head = 0;
+int count = 0;
+bool initialized = false;
+bool opened = false;
+bool connected = true;
+std::uint32_t buttons = 0;
+
+void enqueue(const MouseData& data) {
+    if (count == MOUSE_MAX_DATA_NUM) {
+        head = (head + 1) % MOUSE_MAX_DATA_NUM;
+        --count;
+    }
+    history[(head + count) % MOUSE_MAX_DATA_NUM] = data;
+    ++count;
+}
+}
+
+namespace Mouse {
+
+int Initialize() {
+    std::lock_guard lock(mouseMutex);
+    initialized = true;
+    return MOUSE_OK;
+}
+
+int Open(int userId, std::int32_t type, std::int32_t index, const MouseOpenParam* param) {
+    std::lock_guard lock(mouseMutex);
+    if (!initialized) return MOUSE_ERROR_NOT_INITIALIZED;
+    if (userId < 0 || type != 0 || index != 0 ||
+        (param != nullptr && (param->behaviorFlag & ~MOUSE_OPEN_PARAM_MERGED) != 0)) {
+        return MOUSE_ERROR_INVALID_ARG;
+    }
+    if (opened) return MOUSE_ERROR_ALREADY_OPENED;
+    opened = true;
+    buttons = 0;
+    head = 0;
+    count = 0;
+    MouseData initial{};
+    initial.timestamp = sceKernelGetProcessTime();
+    initial.connected = connected;
+    enqueue(initial);
+    return MOUSE_HANDLE;
+}
+
+int Close(std::int32_t handle) {
+    std::lock_guard lock(mouseMutex);
+    if (!initialized) return MOUSE_ERROR_NOT_INITIALIZED;
+    if (handle != MOUSE_HANDLE || !opened) return MOUSE_ERROR_INVALID_HANDLE;
+    opened = false;
+    buttons = 0;
+    head = 0;
+    count = 0;
+    return MOUSE_OK;
+}
+
+int Read(std::int32_t handle, MouseData* data, std::int32_t num) {
+    std::lock_guard lock(mouseMutex);
+    if (!initialized) return MOUSE_ERROR_NOT_INITIALIZED;
+    if (handle != MOUSE_HANDLE || !opened) return MOUSE_ERROR_INVALID_HANDLE;
+    if (data == nullptr || num <= 0 || num > MOUSE_MAX_DATA_NUM) return MOUSE_ERROR_INVALID_ARG;
+    const int available = std::min(count, num);
+    for (int i = 0; i < available; ++i) {
+        data[i] = history[head];
+        head = (head + 1) % MOUSE_MAX_DATA_NUM;
+    }
+    count -= available;
+    return available;
+}
+
+void Publish(const MouseInputEvent& event) {
+    std::lock_guard lock(mouseMutex);
+    if (event.connectionChange) {
+        if (connected == event.connected) return;
+        connected = event.connected;
+        if (!connected) buttons = 0;
+    } else if (!connected) {
+        return;
+    }
+    if (!opened) return;
+    if (event.resetButtons) buttons = 0;
+    if (event.button != 0) {
+        if (event.pressed) buttons |= event.button;
+        else buttons &= ~event.button;
+    }
+    MouseData data{};
+    data.timestamp = sceKernelGetProcessTime();
+    data.connected = connected;
+    data.buttons = buttons;
+    data.x_axis = event.x;
+    data.y_axis = event.y;
+    data.wheel = event.wheel;
+    data.tilt = event.tilt;
+    enqueue(data);
+}
+
+}
diff --git a/core/libs/prx/libSceMouse/tests/Mouse.cpp b/core/libs/prx/libSceMouse/tests/Mouse.cpp
new file mode 100644
index 000000000..e01f3f9b4
--- /dev/null
+++ b/core/libs/prx/libSceMouse/tests/Mouse.cpp
@@ -0,0 +1,108 @@
+#include "prx/libSceMouse/include/mouse_structs.h"
+#include "prx/libSceMouse/include/MouseState.hpp"
+#include "prx/libSceVideoOut/include/MouseInput.hpp"
+#include "SDL_events.h"
+#include "SDL_mouse.h"
+
+#include <cstdlib>
+
+extern "C" {
+int APS5_VABI sceMouseInit();
+int APS5_VABI sceMouseOpen(int, std::int32_t, std::int32_t, const void*);
+int APS5_VABI sceMouseClose(std::int32_t);
+int APS5_VABI sceMouseRead(std::int32_t, MouseData*, std::int32_t);
+}
+
+static void Require(bool value) { if (!value) std::abort(); }
+
+int main() {
+    MouseData data[64]{};
+    Require(sceMouseOpen(1, 0, 0, nullptr) == MOUSE_ERROR_NOT_INITIALIZED);
+    Require(sceMouseInit() == MOUSE_OK);
+    Require(sceMouseInit() == MOUSE_OK);
+    Require(sceMouseOpen(1, 0, 1, nullptr) == MOUSE_ERROR_INVALID_ARG);
+    MouseOpenParam unsupported{};
+    unsupported.behaviorFlag = 2;
+    Require(sceMouseOpen(1, 0, 0, &unsupported) == MOUSE_ERROR_INVALID_ARG);
+    Require(sceMouseOpen(1, 0, 0, nullptr) == MOUSE_HANDLE);
+    Require(sceMouseOpen(1, 0, 0, nullptr) == MOUSE_ERROR_ALREADY_OPENED);
+    Require(sceMouseRead(42, data, 1) == MOUSE_ERROR_INVALID_HANDLE);
+    Require(sceMouseRead(MOUSE_HANDLE, nullptr, 1) == MOUSE_ERROR_INVALID_ARG);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 65) == MOUSE_ERROR_INVALID_ARG);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 1);
+    Require(data[0].connected && data[0].buttons == 0);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+
+    MouseInput input;
+    SDL_Event event{};
+    event.type = SDL_MOUSEMOTION;
+    event.motion.windowID = 7;
+    event.motion.xrel = 9;
+    event.motion.yrel = -4;
+    input.HandleEvent(event, 8);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+    input.HandleEvent(event, 7);
+
+    event = {};
+    event.type = SDL_MOUSEBUTTONDOWN;
+    event.button.windowID = 7;
+    event.button.button = SDL_BUTTON_RIGHT;
+    input.HandleEvent(event, 7);
+    event = {};
+    event.type = SDL_MOUSEWHEEL;
+    event.wheel.windowID = 7;
+    event.wheel.x = 2;
+    event.wheel.y = -3;
+    event.wheel.direction = SDL_MOUSEWHEEL_FLIPPED;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 3) == 3);
+    Require(data[0].x_axis == 9 && data[0].y_axis == -4 && data[0].buttons == 0);
+    Require(data[1].buttons == 2);
+    Require(data[2].buttons == 2 && data[2].wheel == 3 && data[2].tilt == -2);
+    Require(data[0].timestamp <= data[2].timestamp);
+    event = {};
+    event.type = SDL_MOUSEBUTTONDOWN;
+    event.button.windowID = 7;
+    event.button.button = SDL_BUTTON_X1;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+
+    event = {};
+    event.type = SDL_WINDOWEVENT;
+    event.window.windowID = 7;
+    event.window.event = SDL_WINDOWEVENT_FOCUS_LOST;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 1);
+    Require(data[0].connected && data[0].buttons == 0);
+    event.type = SDL_MOUSEMOTION;
+    event.motion.xrel = 5;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+    event.type = SDL_WINDOWEVENT;
+    event.window.event = SDL_WINDOWEVENT_FOCUS_GAINED;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+    event.window.event = SDL_WINDOWEVENT_CLOSE;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 1 && !data[0].connected);
+    event.window.event = SDL_WINDOWEVENT_FOCUS_GAINED;
+    input.HandleEvent(event, 7);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 1 && data[0].connected);
+
+    for (int i = 0; i < 70; ++i) {
+        MouseInputEvent motion{};
+        motion.x = i;
+        MousePublishInput_nid_postfix(motion);
+    }
+    Require(sceMouseRead(MOUSE_HANDLE, data, 64) == 64);
+    Require(data[0].x_axis == 6 && data[63].x_axis == 69);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 0);
+    Require(sceMouseClose(MOUSE_HANDLE) == MOUSE_OK);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == MOUSE_ERROR_INVALID_HANDLE);
+    Require(sceMouseClose(MOUSE_HANDLE) == MOUSE_ERROR_INVALID_HANDLE);
+    MouseOpenParam merged{};
+    merged.behaviorFlag = MOUSE_OPEN_PARAM_MERGED;
+    Require(sceMouseOpen(1, 0, 0, &merged) == MOUSE_HANDLE);
+    Require(sceMouseRead(MOUSE_HANDLE, data, 1) == 1 && data[0].buttons == 0);
+    Require(sceMouseClose(MOUSE_HANDLE) == MOUSE_OK);
+}
diff --git a/core/libs/prx/libSceVideoOut/CMakeLists.txt b/core/libs/prx/libSceVideoOut/CMakeLists.txt
index e41cf34bd..e039c0529 100644
--- a/core/libs/prx/libSceVideoOut/CMakeLists.txt
+++ b/core/libs/prx/libSceVideoOut/CMakeLists.txt
@@ -6,6 +6,7 @@ add_library(libSceVideoOut SHARED EXCLUDE_FROM_ALL
         ${CMAKE_CURRENT_SOURCE_DIR}/src/VideoOutDriver.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/src/DisplayWindow.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/src/PadInput.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/src/MouseInput.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/src/InputMapping.cpp
 )
 
@@ -14,7 +15,7 @@ target_include_directories(libSceVideoOut PRIVATE
         ${CMAKE_SOURCE_DIR}/3rdparty/SDL2/include
         ${CMAKE_SOURCE_DIR}/3rdparty/Vulkan-Headers/include
 )
-target_link_libraries(libSceVideoOut PRIVATE libSceAgcDriver libScePad libc libkernel SDL2-static)
+target_link_libraries(libSceVideoOut PRIVATE libSceAgcDriver libScePad libSceMouse libc libkernel SDL2-static)
 if(WIN32)
     target_link_libraries(libSceVideoOut PRIVATE comctl32)
 endif()
diff --git a/core/libs/prx/libSceVideoOut/include/MouseInput.hpp b/core/libs/prx/libSceVideoOut/include/MouseInput.hpp
new file mode 100644
index 000000000..56ea31b6d
--- /dev/null
+++ b/core/libs/prx/libSceVideoOut/include/MouseInput.hpp
@@ -0,0 +1,14 @@
+#ifndef CORE_LIBS_PRX_LIBSCEVIDEOOUT_MOUSEINPUT_HPP
+#define CORE_LIBS_PRX_LIBSCEVIDEOOUT_MOUSEINPUT_HPP
+
+#include "SDL_events.h"
+
+class MouseInput {
+public:
+    void HandleEvent(const SDL_Event& event, unsigned windowId);
+
+private:
+    bool focused = true;
+};
+
+#endif
diff --git a/core/libs/prx/libSceVideoOut/src/MouseInput.cpp b/core/libs/prx/libSceVideoOut/src/MouseInput.cpp
new file mode 100644
index 000000000..3a5443e6e
--- /dev/null
+++ b/core/libs/prx/libSceVideoOut/src/MouseInput.cpp
@@ -0,0 +1,55 @@
+#include "prx/libSceVideoOut/include/MouseInput.hpp"
+#include "prx/libSceMouse/include/MouseState.hpp"
+
+#include "SDL_mouse.h"
+
+void MouseInput::HandleEvent(const SDL_Event& event, unsigned windowId) {
+    MouseInputEvent input{};
+    switch (event.type) {
+        case SDL_MOUSEMOTION:
+            if (event.motion.windowID != windowId || !focused) return;
+            input.x = event.motion.xrel;
+            input.y = event.motion.yrel;
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEBUTTONUP:
+            if (event.button.windowID != windowId || !focused) return;
+            switch (event.button.button) {
+                case SDL_BUTTON_LEFT: input.button = 1; break;
+                case SDL_BUTTON_RIGHT: input.button = 2; break;
+                case SDL_BUTTON_MIDDLE: input.button = 4; break;
+                default: return;
+            }
+            input.pressed = event.type == SDL_MOUSEBUTTONDOWN;
+            break;
+        case SDL_MOUSEWHEEL:
+            if (event.wheel.windowID != windowId || !focused) return;
+            input.wheel = event.wheel.y;
+            input.tilt = event.wheel.x;
+            if (event.wheel.direction == SDL_MOUSEWHEEL_FLIPPED) {
+                input.wheel = -input.wheel;
+                input.tilt = -input.tilt;
+            }
+            if (input.wheel == 0 && input.tilt == 0) return;
+            break;
+        case SDL_WINDOWEVENT:
+            if (event.window.windowID != windowId) return;
+            if (event.window.event == SDL_WINDOWEVENT_FOCUS_LOST) {
+                focused = false;
+                input.resetButtons = true;
+            } else if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
+                focused = true;
+                input.connectionChange = true;
+            } else if (event.window.event == SDL_WINDOWEVENT_CLOSE) {
+                focused = false;
+                input.connectionChange = true;
+                input.connected = false;
+            } else {
+                return;
+            }
+            break;
+        default:
+            return;
+    }
+    MousePublishInput_nid_postfix(input);
+}
diff --git a/core/libs/prx/libSceVideoOut/src/VideoOutDriver.cpp b/core/libs/prx/libSceVideoOut/src/VideoOutDriver.cpp
index ffc1ac470..c2d62978b 100644
--- a/core/libs/prx/libSceVideoOut/src/VideoOutDriver.cpp
+++ b/core/libs/prx/libSceVideoOut/src/VideoOutDriver.cpp
@@ -10,6 +10,7 @@
 #include "SDL.h"
 #include "SDL_vulkan.h"
 #include "prx/libSceVideoOut/include/PadInput.hpp"
+#include "prx/libSceVideoOut/include/MouseInput.hpp"
 #include "prx/libScePad/include/PadState.hpp"
 #include "prx/libkernel/Equeue/Equeue.hpp"
 #include "prx/libkernel/Time/include/Time.hpp"
@@ -466,6 +467,7 @@ void VideoOutDriver::presentLoop(std::stop_token token) {
     std::shared_ptr<FlipRequest> current;
     try {
         PadInput padInput;
+        MouseInput mouseInput;
         while (!token.stop_requested()) {
             {
                 std::unique_lock lock(flipQueue->mutex);
@@ -481,6 +483,7 @@ void VideoOutDriver::presentLoop(std::stop_token token) {
             while (SDL_PollEvent(&event)) {
                 require(event.type != SDL_QUIT, "window was closed");
                 padInput.HandleEvent(event, window);
+                if (window.Handle() != nullptr) mouseInput.HandleEvent(event, SDL_GetWindowID(window.Handle()));
             }
             padInput.Update();
             if (current) {