diff --git a/include/cstrike/Definitions/Input.h b/include/cstrike/Definitions/Input.h
new file mode 100644
index 0000000..08781cd
--- /dev/null
+++ b/include/cstrike/Definitions/Input.h
@@ -0,0 +1,126 @@
+#pragma once
+
+enum ButtonCode_t {
+	BUTTON_CODE_INVALID = -1,
+	BUTTON_CODE_NONE = 0,
+	KEY_FIRST = 0,
+	KEY_NONE = KEY_FIRST,
+	KEY_0,
+	KEY_1,
+	KEY_2,
+	KEY_3,
+	KEY_4,
+	KEY_5,
+	KEY_6,
+	KEY_7,
+	KEY_8,
+	KEY_9,
+	KEY_A,
+	KEY_B,
+	KEY_C,
+	KEY_D,
+	KEY_E,
+	KEY_F,
+	KEY_G,
+	KEY_H,
+	KEY_I,
+	KEY_J,
+	KEY_K,
+	KEY_L,
+	KEY_M,
+	KEY_N,
+	KEY_O,
+	KEY_P,
+	KEY_Q,
+	KEY_R,
+	KEY_S,
+	KEY_T,
+	KEY_U,
+	KEY_V,
+	KEY_W,
+	KEY_X,
+	KEY_Y,
+	KEY_Z,
+	KEY_PAD_0,
+	KEY_PAD_1,
+	KEY_PAD_2,
+	KEY_PAD_3,
+	KEY_PAD_4,
+	KEY_PAD_5,
+	KEY_PAD_6,
+	KEY_PAD_7,
+	KEY_PAD_8,
+	KEY_PAD_9,
+	KEY_PAD_DIVIDE,
+	KEY_PAD_MULTIPLY,
+	KEY_PAD_MINUS,
+	KEY_PAD_PLUS,
+	KEY_PAD_ENTER,
+	KEY_PAD_DECIMAL,
+	KEY_LBRACKET,
+	KEY_RBRACKET,
+	KEY_SEMICOLON,
+	KEY_APOSTROPHE,
+	KEY_BACKQUOTE,
+	KEY_COMMA,
+	KEY_PERIOD,
+	KEY_SLASH,
+	KEY_BACKSLASH,
+	KEY_MINUS,
+	KEY_EQUAL,
+	KEY_ENTER,
+	KEY_SPACE,
+	KEY_BACKSPACE,
+	KEY_TAB,
+	KEY_CAPSLOCK,
+	KEY_NUMLOCK,
+	KEY_ESCAPE,
+	KEY_SCROLLLOCK,
+	KEY_INSERT,
+	KEY_DELETE,
+	KEY_HOME,
+	KEY_END,
+	KEY_PAGEUP,
+	KEY_PAGEDOWN,
+	KEY_BREAK,
+	KEY_LSHIFT,
+	KEY_RSHIFT,
+	KEY_LALT,
+	KEY_RALT,
+	KEY_LCONTROL,
+	KEY_RCONTROL,
+	KEY_LWIN,
+	KEY_RWIN,
+	KEY_APP,
+	KEY_UP,
+	KEY_LEFT,
+	KEY_DOWN,
+	KEY_RIGHT,
+	KEY_F1,
+	KEY_F2,
+	KEY_F3,
+	KEY_F4,
+	KEY_F5,
+	KEY_F6,
+	KEY_F7,
+	KEY_F8,
+	KEY_F9,
+	KEY_F10,
+	KEY_F11,
+	KEY_F12,
+	KEY_CAPSLOCKTOGGLE,
+	KEY_NUMLOCKTOGGLE,
+	KEY_SCROLLLOCKTOGGLE,
+	KEY_LAST = KEY_SCROLLLOCKTOGGLE,
+	KEY_COUNT = KEY_LAST - KEY_FIRST + 1,
+	MOUSE_FIRST = KEY_LAST + 1,
+	MOUSE_LEFT = MOUSE_FIRST,
+	MOUSE_RIGHT,
+	MOUSE_MIDDLE,
+	MOUSE_4,
+	MOUSE_5,
+	MOUSE_WHEEL_UP,
+	MOUSE_WHEEL_DOWN,
+	MOUSE_LAST = MOUSE_WHEEL_DOWN,
+	MOUSE_COUNT = MOUSE_LAST - MOUSE_FIRST + 1
+};
\ No newline at end of file
diff --git a/include/cstrike/Interfaces/IInputInternal.h b/include/cstrike/Interfaces/IInputInternal.h
new file mode 100644
index 0000000..4fd0390
--- /dev/null
+++ b/include/cstrike/Interfaces/IInputInternal.h
@@ -0,0 +1,21 @@
+#pragma once
+
+typedef ButtonCode_t KeyCode;
+typedef ButtonCode_t MouseCode;
+
+enum MouseCodeState_t {
+	BUTTON_RELEASED = 0,
+	BUTTON_PRESSED,
+	BUTTON_DOUBLECLICKED
+};
+
+class IInputInternal {
+	public:
+		void SetKeyCodeState(KeyCode code, bool pressed) {
+			GetVirtualFunction<void(*)(IInputInternal*, KeyCode, bool)>(this, 83)(this, code, pressed);
+		}
+
+		void SetMouseCodeState(MouseCode code, MouseCodeState_t state) {
+			GetVirtualFunction<void(*)(IInputInternal*, MouseCode, MouseCodeState_t)>(this, 84)(this, code, state);
+		}
+};
\ No newline at end of file
diff --git a/include/cstrike/Interfaces/IInputSystem.h b/include/cstrike/Interfaces/IInputSystem.h
new file mode 100644
index 0000000..6ff824c
--- /dev/null
+++ b/include/cstrike/Interfaces/IInputSystem.h
@@ -0,0 +1,10 @@
+#pragma once
+
+enum ButtonCode_t;
+
+class IInputSystem {
+	public:
+		bool IsButtonDown(ButtonCode_t button) {
+			return GetVirtualFunction<bool(*)(void*, ButtonCode_t)>(this, 11)(this, button);
+		}
+};
\ No newline at end of file