diff --git a/include/core/systemevent.h b/include/core/systemevent.h
index 89c85ce..2882b52 100644
--- a/include/core/systemevent.h
+++ b/include/core/systemevent.h
@@ -32,7 +32,113 @@ struct SystemEvent
 
     struct Key
     {
-        char view = char(0);
+        enum class Code
+        {
+            Unknown = -1,
+            A = 0,
+            B,
+            C,
+            D,
+            E,
+            F,
+            G,
+            H,
+            I,
+            J,
+            K,
+            L,
+            M,
+            N,
+            O,
+            P,
+            Q,
+            R,
+            S,
+            T,
+            U,
+            V,
+            W,
+            X,
+            Y,
+            Z,
+            Num0,
+            Num1,
+            Num2,
+            Num3,
+            Num4,
+            Num5,
+            Num6,
+            Num7,
+            Num8,
+            Num9,
+            Escape,
+            LControl,
+            LShift,
+            LAlt,
+            LSystem,
+            RControl,
+            RShift,
+            RAlt,
+            RSystem,
+            Menu,
+            LBracket,
+            RBracket,
+            Semicolon,
+            Comma,
+            Period,
+            Quote,
+            Slash,
+            Backslash,
+            Tilde,
+            Equal,
+            Hyphen,
+            Space,
+            Enter,
+            Backspace,
+            Tab,
+            PageUp,
+            PageDown,
+            End,
+            Home,
+            Insert,
+            Delete,
+            Add,
+            Subtract,
+            Multiply,
+            Divide,
+            Left,
+            Right,
+            Up,
+            Down,
+            Numpad0,
+            Numpad1,
+            Numpad2,
+            Numpad3,
+            Numpad4,
+            Numpad5,
+            Numpad6,
+            Numpad7,
+            Numpad8,
+            Numpad9,
+            F1,
+            F2,
+            F3,
+            F4,
+            F5,
+            F6,
+            F7,
+            F8,
+            F9,
+            F10,
+            F11,
+            F12,
+            F13,
+            F14,
+            F15,
+            Pause
+        };
+
+        Code view = Code::Unknown;
         bool alt = false;
         bool control = false;
         bool shift = false;
@@ -62,4 +168,4 @@ struct SystemEvent
     std::variant<Size, Key, Mouse, None> data;
 };
     
-}
\ No newline at end of file
+}
diff --git a/src/application/include/application/gamestate.h b/src/application/include/application/gamestate.h
index e3fa346..0a2cf32 100644
--- a/src/application/include/application/gamestate.h
+++ b/src/application/include/application/gamestate.h
@@ -3,6 +3,7 @@
 #include "state.h"
 #include "core/music.h"
 #include "core/game.h"
+#include "core/corefactory.h"
 
 class Group;
 
@@ -16,7 +17,7 @@ public:
     };
 
 
-    explicit GameState(const std::shared_ptr<kku::Game>& game, Callbacks&& callbacks);
+    explicit GameState(const std::shared_ptr<kku::CoreFactory>& core_factory, const std::shared_ptr<kku::Game>& game, Callbacks&& callbacks);
 
     virtual void input(const kku::SystemEvent& event) override;
     virtual void update(const kku::microsec& dt) override;
@@ -26,6 +27,7 @@ public:
     virtual void leave() override;
 
 private:
+    const std::shared_ptr<kku::CoreFactory> _core_factory;
     std::shared_ptr<kku::Music> _music;
     std::shared_ptr<kku::Game> _game;
 
diff --git a/src/application/src/application.cpp b/src/application/src/application.cpp
index 28341d8..a9731b2 100644
--- a/src/application/src/application.cpp
+++ b/src/application/src/application.cpp
@@ -22,7 +22,7 @@ bool Application::init()
     EditorState::Callbacks editor_callbacks = {[&](){ popState(); }};
 
     const auto main_menu = std::make_shared<MainMenu>(_core_factory, std::move(callbacks));
-    const auto game_state = std::make_shared<GameState>(_game_factory->getGame(), GameState::Callbacks());
+    const auto game_state = std::make_shared<GameState>(_core_factory, _game_factory->getGame(), GameState::Callbacks());
     const auto editor = std::make_shared<EditorState>(_core_factory, _game_factory->getEditor(), std::move(editor_callbacks));
 
     _states[GUIState::Tag::MAIN_MENU] = main_menu;
diff --git a/src/application/src/editorstate.cpp b/src/application/src/editorstate.cpp
index 9e091e4..004ba63 100644
--- a/src/application/src/editorstate.cpp
+++ b/src/application/src/editorstate.cpp
@@ -158,7 +158,7 @@ void EditorState::enter()
     callbacks.onInput = [&editor, &music](const kku::SystemEvent& event)
     {
         if (event.type == kku::SystemEvent::Type::KeyRelease
-        &&  std::get<kku::SystemEvent::Key>(event.data).view == ' ')
+        &&  std::get<kku::SystemEvent::Key>(event.data).view == kku::SystemEvent::Key::Code::Space)
             music->isPlaying() ? music->pause() : music->play();
         else if (event.type == kku::SystemEvent::Type::MouseWheelScroll)
         {
diff --git a/src/application/src/gamestate.cpp b/src/application/src/gamestate.cpp
index 9771dda..94c5edd 100644
--- a/src/application/src/gamestate.cpp
+++ b/src/application/src/gamestate.cpp
@@ -4,10 +4,13 @@
 
 #include "core/game.h"
 
-GameState::GameState(const std::shared_ptr<kku::Game>& game, Callbacks&& callbacks) :
+GameState::GameState(const std::shared_ptr<kku::CoreFactory>& core_factory, const std::shared_ptr<kku::Game>& game, Callbacks&& callbacks) :
+    _core_factory(core_factory),
     _game(game),
     _onLeaveGameCallback(callbacks.onLeaveGame)
-{}
+{
+    _music = _core_factory->getMusic();
+}
 
 void GameState::input(const kku::SystemEvent& event)
 {
@@ -17,7 +20,7 @@ void GameState::input(const kku::SystemEvent& event)
         break;
 
     case kku::SystemEvent::Type::KeyRelease:
-        if (std::get<kku::SystemEvent::Key>(event.data).view == ' ')
+        if (std::get<kku::SystemEvent::Key>(event.data).view == kku::SystemEvent::Key::Code::Space)
             _music->isPlaying() ? _music->pause() : _music->play();
     }
 
diff --git a/src/application/src/widgets/bpmcalculatorwidget.cpp b/src/application/src/widgets/bpmcalculatorwidget.cpp
index 807fff2..4fa2147 100644
--- a/src/application/src/widgets/bpmcalculatorwidget.cpp
+++ b/src/application/src/widgets/bpmcalculatorwidget.cpp
@@ -29,7 +29,7 @@ void BPMCalculatorWidget::input(const kku::SystemEvent& event)
 
     case kku::SystemEvent::Type::KeyPress:
     {
-        if (std::get<kku::SystemEvent::Key>(event.data).view == ' ')
+        if (std::get<kku::SystemEvent::Key>(event.data).view == kku::SystemEvent::Key::Code::Space)
         {
             _bpm_calculator->click(_current_time());
         }
diff --git a/src/impl/sfml/application/applicationsfml.cpp b/src/impl/sfml/application/applicationsfml.cpp
index 0963abc..5727be0 100644
--- a/src/impl/sfml/application/applicationsfml.cpp
+++ b/src/impl/sfml/application/applicationsfml.cpp
@@ -1,6 +1,7 @@
 #include "applicationsfml.h"
 #include "sfml/corefactorysfml.h"
 #include "sfml/classicmode/classicfactorysfml.h"
+#include "sfml/application/inputconvertersfml.h"
 
 #include <SFML/System/Clock.hpp>
 
@@ -47,7 +48,7 @@ void ApplicationSFML::run()
                 break;
 
             default:
-                Application::input(convert(event));
+                Application::input(kku::convert(event));
                 break;
             }
         }
@@ -61,127 +62,3 @@ void ApplicationSFML::run()
         }
     }
 }
-
-kku::SystemEvent ApplicationSFML::convert(const sf::Event& event) const
-{
-    switch (event.type)
-    {
-    default:
-        break;
-
-    case sf::Event::Resized:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::Resize,
-            kku::SystemEvent::Size
-            {
-                event.size.width,
-                event.size.height
-            }
-        };
-
-    case sf::Event::KeyPressed:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::KeyPress,
-            kku::SystemEvent::Key
-            {
-                ' ', // converter
-                event.key.alt,
-                event.key.control,
-                event.key.shift
-            }
-        };
-
-    case sf::Event::KeyReleased:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::KeyRelease,
-            kku::SystemEvent::Key
-            {
-                ' ', // converter
-                event.key.alt,
-                event.key.control,
-                event.key.shift
-            }
-        };
-
-    case sf::Event::MouseWheelScrolled:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::MouseWheelScroll,
-            kku::SystemEvent::Mouse
-            {
-                kku::Point
-                {
-                    event.mouseWheelScroll.x,
-                    event.mouseWheelScroll.y
-                },
-
-                (event.mouseWheelScroll.delta > 0),
-                kku::SystemEvent::Mouse::Button::Wheel
-            }
-        };
-    
-    case sf::Event::MouseMoved:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::MouseMove,
-            kku::SystemEvent::Mouse
-            {
-                kku::Point
-                {
-                    event.mouseMove.x,
-                    event.mouseMove.y
-                },
-
-                false,
-                kku::SystemEvent::Mouse::Button::None
-            }
-        };
-
-    case sf::Event::MouseButtonPressed:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::MousePress,
-            kku::SystemEvent::Mouse
-            {
-                kku::Point
-                {
-                    event.mouseButton.x,
-                    event.mouseButton.y
-                },
-
-                false,
-                ((event.mouseButton.button == sf::Mouse::Button::Left)
-                 ? kku::SystemEvent::Mouse::Button::Left
-                 : kku::SystemEvent::Mouse::Button::Right)
-            }
-        };
-
-    case sf::Event::MouseButtonReleased:
-        return kku::SystemEvent
-        {
-            kku::SystemEvent::Type::MouseRelease,
-            kku::SystemEvent::Mouse
-            {
-                kku::Point
-                {
-                    event.mouseButton.x,
-                    event.mouseButton.y
-                },
-
-                false,
-                ((event.mouseButton.button == sf::Mouse::Button::Left)
-                 ? kku::SystemEvent::Mouse::Button::Left
-                 : kku::SystemEvent::Mouse::Button::Right)
-            }
-        };
-    }
-
-    return kku::SystemEvent
-    {
-        kku::SystemEvent::Type::None,
-        kku::SystemEvent::None{}
-    };
-}
diff --git a/src/impl/sfml/application/applicationsfml.h b/src/impl/sfml/application/applicationsfml.h
index 1e57c69..f63ce30 100644
--- a/src/impl/sfml/application/applicationsfml.h
+++ b/src/impl/sfml/application/applicationsfml.h
@@ -14,6 +14,4 @@ public:
 
 private:
     const std::shared_ptr<sf::RenderWindow> _render_window;
-
-    inline kku::SystemEvent convert(const sf::Event& event) const;
 };
diff --git a/src/impl/sfml/application/inputconvertersfml.h b/src/impl/sfml/application/inputconvertersfml.h
new file mode 100644
index 0000000..2261588
--- /dev/null
+++ b/src/impl/sfml/application/inputconvertersfml.h
@@ -0,0 +1,138 @@
+#pragma once
+
+#include "core/systemevent.h"
+#include <SFML/Window/Event.hpp>
+
+namespace kku
+{
+
+constexpr kku::SystemEvent::Key::Code convert(sf::Keyboard::Key key) noexcept
+{
+    return kku::SystemEvent::Key::Code{int(key)};
+}
+
+constexpr kku::SystemEvent convert(const sf::Event& event) noexcept
+{
+    switch (event.type)
+    {
+    default:
+        break;
+
+    case sf::Event::Resized:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::Resize,
+            kku::SystemEvent::Size
+            {
+                event.size.width,
+                event.size.height
+            }
+        };
+
+    case sf::Event::KeyPressed:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::KeyPress,
+            kku::SystemEvent::Key
+            {
+                kku::convert(event.key.code),
+                event.key.alt,
+                event.key.control,
+                event.key.shift
+            }
+        };
+
+    case sf::Event::KeyReleased:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::KeyRelease,
+            kku::SystemEvent::Key
+            {
+                kku::convert(event.key.code),
+                event.key.alt,
+                event.key.control,
+                event.key.shift
+            }
+        };
+
+    case sf::Event::MouseWheelScrolled:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::MouseWheelScroll,
+            kku::SystemEvent::Mouse
+            {
+                kku::Point
+                {
+                    event.mouseWheelScroll.x,
+                    event.mouseWheelScroll.y
+                },
+
+                (event.mouseWheelScroll.delta > 0),
+                kku::SystemEvent::Mouse::Button::Wheel
+            }
+        };
+
+    case sf::Event::MouseMoved:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::MouseMove,
+            kku::SystemEvent::Mouse
+            {
+                kku::Point
+                {
+                    event.mouseMove.x,
+                    event.mouseMove.y
+                },
+
+                false,
+                kku::SystemEvent::Mouse::Button::None
+            }
+        };
+
+    case sf::Event::MouseButtonPressed:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::MousePress,
+            kku::SystemEvent::Mouse
+            {
+                kku::Point
+                {
+                    event.mouseButton.x,
+                    event.mouseButton.y
+                },
+
+                false,
+                ((event.mouseButton.button == sf::Mouse::Button::Left)
+                 ? kku::SystemEvent::Mouse::Button::Left
+                 : kku::SystemEvent::Mouse::Button::Right)
+            }
+        };
+
+    case sf::Event::MouseButtonReleased:
+        return kku::SystemEvent
+        {
+            kku::SystemEvent::Type::MouseRelease,
+            kku::SystemEvent::Mouse
+            {
+                kku::Point
+                {
+                    event.mouseButton.x,
+                    event.mouseButton.y
+                },
+
+                false,
+                ((event.mouseButton.button == sf::Mouse::Button::Left)
+                 ? kku::SystemEvent::Mouse::Button::Left
+                 : kku::SystemEvent::Mouse::Button::Right)
+            }
+        };
+    }
+
+    return kku::SystemEvent
+    {
+        kku::SystemEvent::Type::None,
+        kku::SystemEvent::None{}
+    };
+}
+
+}
diff --git a/src/modes/classicmode/editor/classiceditor.cpp b/src/modes/classicmode/editor/classiceditor.cpp
index 4e7a567..57335ae 100644
--- a/src/modes/classicmode/editor/classiceditor.cpp
+++ b/src/modes/classicmode/editor/classiceditor.cpp
@@ -51,7 +51,10 @@ void ClassicEditor::input(kku::GameEvent&& input)
 
             element.element.position = std::get<kku::SystemEvent::Mouse>(event.data).position;
             element.element.falling_curve_interpolation = {};
-            element.keys = {'W', 'w'};
+
+            element.keys = {kku::SystemEvent::Key::Code::W,
+                            kku::SystemEvent::Key::Code::Up};
+
             element.element.type = Type::UP;
 
             init.elements = { element };
diff --git a/src/modes/classicmode/game/arrowelement.h b/src/modes/classicmode/game/arrowelement.h
index 8536462..c6c3043 100644
--- a/src/modes/classicmode/game/arrowelement.h
+++ b/src/modes/classicmode/game/arrowelement.h
@@ -16,11 +16,12 @@ struct ArrowElement
 {
     std::shared_ptr<ClassicSprite> sprite;
     std::array<std::shared_ptr<ClassicAnimationScenario>, 5> animations;
-    char pressed_as = ' ';
+
+    kku::SystemEvent::Key::Code pressed_as = kku::SystemEvent::Key::Code::Unknown;
 
     kku::Point position;
     std::vector<kku::Point> falling_curve_interpolation;
-    std::array<char, 2> keys;
+    std::array<kku::SystemEvent::Key::Code, 2> keys;
     Type type = Type::NONE;
     bool pressed = false;
 
diff --git a/src/modes/classicmode/game/classicarrownote.cpp b/src/modes/classicmode/game/classicarrownote.cpp
index 6bf61dc..be388ac 100644
--- a/src/modes/classicmode/game/classicarrownote.cpp
+++ b/src/modes/classicmode/game/classicarrownote.cpp
@@ -32,7 +32,7 @@ void ClassicArrowNote::input(kku::GameEvent&& input)
                     if (element.pressed)
                         return false;
 
-                    const char code = std::get<kku::SystemEvent::Key>(input.event.data).view;
+                    const auto code = std::get<kku::SystemEvent::Key>(input.event.data).view;
                     auto key_iterator = std::find(element.keys.begin(), element.keys.end(), code);
 
                     bool found_key = key_iterator != element.keys.end();
@@ -110,7 +110,7 @@ bool ClassicArrowNote::allElementsPressed() const
            });
 }
 
-bool ClassicArrowNote::isPressedAs(char key) const
+bool ClassicArrowNote::isPressedAs(kku::SystemEvent::Key::Code key) const
 {
     return std::any_of(_elements.begin(), _elements.end(),
            [key](const auto& element)
diff --git a/src/modes/classicmode/game/classicarrownote.h b/src/modes/classicmode/game/classicarrownote.h
index c0c9c8d..b49a3a2 100644
--- a/src/modes/classicmode/game/classicarrownote.h
+++ b/src/modes/classicmode/game/classicarrownote.h
@@ -19,7 +19,7 @@ public:
     virtual void setGraphics(ClassicGraphicsManager * const manager, kku::TimeRange&& range) override;
 
     bool allElementsPressed() const;
-    bool isPressedAs(char key) const;
+    bool isPressedAs(kku::SystemEvent::Key::Code key) const;
     inline bool isHold() const;
 
 private:
diff --git a/src/modes/classicmode/game/classicgame.cpp b/src/modes/classicmode/game/classicgame.cpp
index 15c38a8..c8acec6 100644
--- a/src/modes/classicmode/game/classicgame.cpp
+++ b/src/modes/classicmode/game/classicgame.cpp
@@ -54,13 +54,13 @@ void ClassicGame::input(kku::GameEvent&& input)
 void ClassicGame::update(kku::UpdateData&& updatedata)
 {
     // UNCOMMENT TO TEST AUTOPLAY
-    auto note_it = _timeline->getActiveNote(updatedata.timestamp);
+    /*auto note_it = _timeline->getActiveNote(updatedata.timestamp);
 
     if (!_timeline->isExpired(note_it) && updatedata.timestamp >= (*note_it)->getPerfectOffset())
     {
         auto note = (*note_it);
         note->input(kku::GameEvent{updatedata.timestamp, kku::SystemEvent{kku::SystemEvent::Type::None, kku::SystemEvent::Key{}}});
-    }
+    }*/
 
     _timeline->update(updatedata.timestamp);
     _graphics_manager->update(updatedata.timestamp);
diff --git a/src/modes/classicmode/game/classicmapcreator.cpp b/src/modes/classicmode/game/classicmapcreator.cpp
index c4d2c1c..eff9fb3 100644
--- a/src/modes/classicmode/game/classicmapcreator.cpp
+++ b/src/modes/classicmode/game/classicmapcreator.cpp
@@ -40,13 +40,19 @@ auto classic::createBeatmap(const std::string& filepath, const Context &context)
 
         element.element.position = kku::Point(x, 390.f);
         element.element.falling_curve_interpolation = {};
-        element.keys = {'W', 'w'};
+
+        element.keys = {kku::SystemEvent::Key::Code::W,
+                        kku::SystemEvent::Key::Code::Up};
+
         element.element.type = Type::UP;
 
         if (counter == 0)
         {
             init.hold = true;
-            element.keys = {'D', 'd'};
+
+            element.keys = {kku::SystemEvent::Key::Code::D,
+                            kku::SystemEvent::Key::Code::Right};
+
             element.element.type = Type::RIGHT;
         }
 
diff --git a/src/modes/classicmode/game/holdmanager.cpp b/src/modes/classicmode/game/holdmanager.cpp
index 5f4bbae..8fef198 100644
--- a/src/modes/classicmode/game/holdmanager.cpp
+++ b/src/modes/classicmode/game/holdmanager.cpp
@@ -9,7 +9,7 @@ void HoldManager::emplace(ClassicArrowNote* note)
     _notes_on_hold.emplace_back(note);
 }
 
-void HoldManager::checkRelease(char released_key)
+void HoldManager::checkRelease(kku::SystemEvent::Key::Code released_key)
 {
     bool key_match = std::any_of(_notes_on_hold.begin(), _notes_on_hold.end(),
                      [released_key](const auto& note)
diff --git a/src/modes/classicmode/game/holdmanager.h b/src/modes/classicmode/game/holdmanager.h
index 598ca3c..ddc5d20 100644
--- a/src/modes/classicmode/game/holdmanager.h
+++ b/src/modes/classicmode/game/holdmanager.h
@@ -12,7 +12,7 @@ class HoldManager
 {
 public:
     void emplace(ClassicArrowNote* note);
-    void checkRelease(char released_key);
+    void checkRelease(kku::SystemEvent::Key::Code released_key);
 
     void drawHoldBar();
 
diff --git a/src/modes/classicmode/game/initializers/arrowelementinitializer.h b/src/modes/classicmode/game/initializers/arrowelementinitializer.h
index 827a6f9..6c63706 100644
--- a/src/modes/classicmode/game/initializers/arrowelementinitializer.h
+++ b/src/modes/classicmode/game/initializers/arrowelementinitializer.h
@@ -5,5 +5,5 @@
 struct ArrowElementInitializer
 {
     ElementInitializer element;
-    std::array<char, 2> keys;
+    std::array<kku::SystemEvent::Key::Code, 2> keys;
 };