diff --git a/src/config.rs b/src/config.rs
index 1ac93ec..df1a16e 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,5 +1,6 @@
-use crate::constants::{UNIT_LENGTH, UNIT_SIZE, WINDOW_TITLE};
+use crate::constants::WINDOW_TITLE;
 use crate::validator;
+use crate::window_size::WindowSize;
 
 pub struct Title(String);
 
@@ -14,63 +15,36 @@ impl Title {
     }
 }
 
-pub struct Width(u32);
-
-impl Width {
-    pub fn new(width: u32) -> Result<Self, String> {
-        validator::validate_numeric_range(width, 1, 1000)?;
-        Ok(Self(width))
-    }
-
-    pub fn value(&self) -> u32 {
-        self.0
-    }
-}
-
-pub struct Height(u32);
-
-impl Height {
-    pub fn new(height: u32) -> Result<Self, String> {
-        validator::validate_numeric_range(height, 1, 1000)?;
-        Ok(Self(height))
-    }
-
-    pub fn value(&self) -> u32 {
-        self.0
-    }
-}
-
 pub struct WindowConfig {
-    pub title: Title,
-    pub width: Width,
-    pub height: Height,
+    title: Title,
+    window_size: WindowSize,
 }
 
 impl WindowConfig {
-    pub fn new(title: &str, width: u32, height: u32) -> Result<WindowConfig, String> {
-        Ok(Self {
-            title: Title::new(title)?,
-            width: Width::new(width)?,
-            height: Height::new(height)?,
-        })
+    pub fn new() -> Self {
+        let title = Title::new(WINDOW_TITLE).unwrap();
+        let window_size = WindowSize::new_by_unit_size();
+
+        Self { title, window_size }
     }
 
-    fn calculate_window_size() -> (u32, u32) {
-        (UNIT_SIZE.0 * UNIT_LENGTH.0, UNIT_SIZE.1 * UNIT_LENGTH.1)
+    pub fn title(&self) -> &str {
+        self.title.value()
     }
 
-    fn create_with_default_size(title: &str) -> Result<WindowConfig, String> {
-        let (width, height) = Self::calculate_window_size();
-        Self::new(title, width, height)
+    pub fn width(&self) -> u32 {
+        self.window_size.width().value()
     }
-}
 
-pub fn create_window_config() -> Result<WindowConfig, String> {
-    WindowConfig::create_with_default_size(WINDOW_TITLE)
+    pub fn height(&self) -> u32 {
+        self.window_size.height().value()
+    }
 }
 
 #[cfg(test)]
 mod tests {
+    use crate::constants::{UNIT_LENGTH, UNIT_SIZE};
+
     use super::*;
     use rstest::rstest;
 
@@ -86,61 +60,12 @@ mod tests {
         assert!(Title::new(title).is_ok());
     }
 
-    #[rstest]
-    #[case::min_1(1)]
-    #[case::max_1000(1000)]
-    #[case::normal(50)]
-    #[should_panic]
-    #[case::min_0(0)]
-    #[should_panic]
-    #[case::max_1001(1001)]
-    fn test_width_new(#[case] width: u32) {
-        assert!(Width::new(width).is_ok());
-    }
-
-    #[rstest]
-    #[case::min_1(1)]
-    #[case::max_1000(1000)]
-    #[case::normal(50)]
-    #[should_panic]
-    #[case::min_0(0)]
-    #[should_panic]
-    #[case::max_1001(1001)]
-    fn test_height_new(#[case] height: u32) {
-        assert!(Height::new(height).is_ok());
-    }
-
-    #[rstest]
-    #[case::normal("Test Window", 800, 600)]
-    #[case::min_1("T", 1, 1)]
-    #[case::max_1000("12345678901234567890123456789012345678901234567890", 1000, 1000)]
-    #[should_panic]
-    #[case::panic_title("", 1, 1)]
-    #[should_panic]
-    #[case::panic_width("T", 0, 1)]
-    #[should_panic]
-    #[case::panic_height("T", 1, 0)]
-    fn test_window_config_creation(#[case] title: &str, #[case] width: u32, #[case] height: u32) {
-        let window_config = WindowConfig::new(title, width, height).unwrap();
-
-        assert_eq!(window_config.title.value(), title);
-        assert_eq!(window_config.width.value(), width);
-        assert_eq!(window_config.height.value(), height);
-    }
-
     #[test]
-    fn test_default_window_size() {
-        let window_config = WindowConfig::create_with_default_size("Default Size Window").unwrap();
-        let expected_size = WindowConfig::calculate_window_size();
-
-        assert_eq!(
-            (window_config.width.value(), window_config.height.value()),
-            expected_size
-        );
-    }
+    fn test_window_config_new() {
+        let window_config = WindowConfig::new();
 
-    #[test]
-    fn test_create_window_config() {
-        create_window_config().unwrap();
+        assert_eq!(window_config.title(), WINDOW_TITLE);
+        assert_eq!(window_config.width(), UNIT_SIZE.0 * UNIT_LENGTH.0);
+        assert_eq!(window_config.height(), UNIT_SIZE.1 * UNIT_LENGTH.1);
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 53f1667..8d21a41 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -17,6 +17,7 @@ mod text_resources;
 mod utils;
 mod validator;
 mod window;
+mod window_size;
 
 use my_app::MyApp;
 
diff --git a/src/position.rs b/src/position.rs
index dfd0479..bc9b714 100644
--- a/src/position.rs
+++ b/src/position.rs
@@ -1,20 +1,48 @@
 use bevy::prelude::*;
 
-use crate::{game_timer::GameTimer, utils};
+use crate::{constants::UNIT_LENGTH, game_timer::GameTimer, utils, validator};
 
-#[derive(Component)]
-pub struct Position {
-    x: i32,
-    y: i32,
+struct PosX(i32);
+
+impl PosX {
+    fn new(x: i32) -> Result<Self, String> {
+        validator::validate_numeric_range(x, 0, (UNIT_LENGTH.0 - 1) as i32)?;
+
+        Ok(Self(x))
+    }
+
+    pub fn value(&self) -> i32 {
+        self.0
+    }
+}
+
+struct PosY(i32);
+
+impl PosY {
+    fn new(y: i32) -> Result<Self, String> {
+        validator::validate_numeric_range(y, 0, (UNIT_LENGTH.1 - 1) as i32)?;
+
+        Ok(Self(y))
+    }
+
+    pub fn value(&self) -> i32 {
+        self.0
+    }
 }
 
+#[derive(Component)]
+pub struct Position(PosX, PosY);
+
 impl Position {
-    pub fn new(x: i32, y: i32) -> Self {
-        Self { x, y }
+    pub fn new(x: i32, y: i32) -> Result<Self, String> {
+        let pos_x = PosX::new(x)?;
+        let pos_y = PosY::new(y)?;
+
+        Ok(Self(pos_x, pos_y))
     }
 
     pub fn vec2(&self) -> Vec2 {
-        Vec2::new(self.x as f32, self.y as f32)
+        Vec2::new(self.x() as f32, self.y() as f32)
     }
 
     pub fn translation(&self, origin: Vec2) -> Vec3 {
@@ -30,9 +58,17 @@ impl Position {
         }
 
         for mut position in position_query.iter_mut() {
-            position.y -= 1;
+            *position = Position::new(position.x(), position.y() - 1).unwrap();
         }
     }
+
+    pub fn x(&self) -> i32 {
+        self.0.value()
+    }
+
+    pub fn y(&self) -> i32 {
+        self.1.value()
+    }
 }
 
 #[cfg(test)]
@@ -43,26 +79,26 @@ mod tests {
 
     #[test]
     fn test_position_new() {
-        let position = Position::new(10, 20);
-        assert_eq!(position.x, 10);
-        assert_eq!(position.y, 20);
+        let position = Position::new(5, 1).unwrap();
+        assert_eq!(position.x(), 5);
+        assert_eq!(position.y(), 1);
     }
 
     #[test]
     fn test_position_vec2() {
-        let position: Position = Position::new(10, 20);
+        let position: Position = Position::new(4, 9).unwrap();
         let vec2 = position.vec2();
-        assert_eq!(vec2, Vec2::new(10.0, 20.0));
+        assert_eq!(vec2, Vec2::new(4.0, 9.0));
     }
 
     #[test]
     fn test_position_translation() {
-        let position = Position::new(10, 20);
+        let position = Position::new(3, 8).unwrap();
         let origin = Vec2::new(-100.0, 5.0);
         let translation = position.translation(origin);
 
-        let expected_x = unit_size().x * position.x as f32 + origin.x;
-        let expected_y = unit_size().y * position.y as f32 + origin.y;
+        let expected_x = unit_size().x * position.x() as f32 + origin.x;
+        let expected_y = unit_size().y * position.y() as f32 + origin.y;
 
         let expected_translation = Vec3::new(expected_x, expected_y, 0.0);
         assert_eq!(translation, expected_translation);
diff --git a/src/sprite.rs b/src/sprite.rs
index 4f997ec..6b0f25b 100644
--- a/src/sprite.rs
+++ b/src/sprite.rs
@@ -40,7 +40,7 @@ pub fn spawn_block(commands: &mut Commands, block_patterns: &mut Res<BlockPatter
     let initial_y = (constants::UNIT_LENGTH.1 - 4) as i32;
 
     block.positions.iter().for_each(|(x, y)| {
-        let position = Position::new(x + initial_x, y + initial_y);
+        let position = Position::new(x + initial_x, y + initial_y).unwrap();
 
         spawn_block_element(commands, position, block.color);
     });
diff --git a/src/utils.rs b/src/utils.rs
index 5f35aa9..92487f6 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,13 +1,13 @@
 use bevy::prelude::*;
 
-use crate::constants;
+use crate::constants::UNIT_SIZE;
 
-pub fn vec2_from_tuple(tuple: (u32, u32)) -> Vec2 {
-    Vec2::new(tuple.0 as f32, tuple.1 as f32)
+pub fn vec2_from_tuple<T: Into<f32> + Copy>(tuple: (T, T)) -> Vec2 {
+    Vec2::new(tuple.0.into(), tuple.1.into())
 }
 
 pub fn unit_size() -> Vec2 {
-    vec2_from_tuple(constants::UNIT_SIZE)
+    vec2_from_tuple((UNIT_SIZE.0 as u16, UNIT_SIZE.1 as u16))
 }
 
 #[cfg(test)]
@@ -18,7 +18,7 @@ mod tests {
     #[rstest]
     #[case::tuple((100, 50), Vec2::new(100.0, 50.0))]
     #[case::tuple((200, 100), Vec2::new(200.0, 100.0))]
-    fn test_vec2_from_tuple(#[case] tuple: (u32, u32), #[case] expected: Vec2) {
+    fn test_vec2_from_tuple(#[case] tuple: (u8, u8), #[case] expected: Vec2) {
         let actual = vec2_from_tuple(tuple);
         assert_eq!(actual, expected);
     }
@@ -26,6 +26,9 @@ mod tests {
     #[test]
     fn test_unit_size() {
         let actual = unit_size();
-        assert_eq!(actual, vec2_from_tuple(constants::UNIT_SIZE));
+        assert_eq!(
+            actual,
+            vec2_from_tuple((UNIT_SIZE.0 as u16, UNIT_SIZE.1 as u16))
+        );
     }
 }
diff --git a/src/validator.rs b/src/validator.rs
index 7a02e15..558b611 100644
--- a/src/validator.rs
+++ b/src/validator.rs
@@ -11,7 +11,11 @@ pub fn validate_string_length(value: &str, min: usize, max: usize) -> Result<(),
     }
 }
 
-pub fn validate_numeric_range(value: u32, min: u32, max: u32) -> Result<(), String> {
+pub fn validate_numeric_range<T: PartialOrd + Copy + std::fmt::Display>(
+    value: T,
+    min: T,
+    max: T,
+) -> Result<(), String> {
     if (min..=max).contains(&value) {
         Ok(())
     } else {
diff --git a/src/window.rs b/src/window.rs
index 96fd67b..f10ef5b 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -1,6 +1,6 @@
 use bevy::prelude::*;
 
-use crate::{config, utils::unit_size};
+use crate::{config::WindowConfig, utils::unit_size};
 
 fn create_window(title: &str, width: u32, height: u32) -> Window {
     Window {
@@ -11,12 +11,12 @@ fn create_window(title: &str, width: u32, height: u32) -> Window {
 }
 
 pub fn init_window() -> Window {
-    let window_config = config::create_window_config().unwrap();
+    let window_config = WindowConfig::new();
 
     create_window(
-        window_config.title.value(),
-        window_config.width.value(),
-        window_config.height.value(),
+        window_config.title(),
+        window_config.width(),
+        window_config.height(),
     )
 }
 
diff --git a/src/window_size.rs b/src/window_size.rs
new file mode 100644
index 0000000..4b35bc7
--- /dev/null
+++ b/src/window_size.rs
@@ -0,0 +1,95 @@
+use crate::{
+    constants::{UNIT_LENGTH, UNIT_SIZE},
+    validator,
+};
+
+pub struct Width(u32);
+
+impl Width {
+    pub fn new(width: u32) -> Result<Self, String> {
+        validator::validate_numeric_range(width, 1, 1000)?;
+        Ok(Self(width))
+    }
+
+    pub fn new_by_unit() -> Result<Self, String> {
+        Width::new(UNIT_SIZE.0 * UNIT_LENGTH.0)
+    }
+
+    pub fn value(&self) -> u32 {
+        self.0
+    }
+}
+
+pub struct Height(u32);
+
+impl Height {
+    pub fn new(height: u32) -> Result<Self, String> {
+        validator::validate_numeric_range(height, 1, 1000)?;
+        Ok(Self(height))
+    }
+
+    pub fn new_by_unit() -> Result<Self, String> {
+        Height::new(UNIT_SIZE.1 * UNIT_LENGTH.1)
+    }
+
+    pub fn value(&self) -> u32 {
+        self.0
+    }
+}
+
+pub struct WindowSize(Width, Height);
+
+impl WindowSize {
+    pub fn new_by_unit_size() -> Self {
+        let width = Width::new_by_unit().unwrap();
+        let height = Height::new_by_unit().unwrap();
+
+        Self(width, height)
+    }
+
+    pub fn width(&self) -> &Width {
+        &self.0
+    }
+
+    pub fn height(&self) -> &Height {
+        &self.1
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use rstest::rstest;
+
+    #[rstest]
+    #[case::min_1(1)]
+    #[case::max_1000(1000)]
+    #[case::normal(50)]
+    #[should_panic]
+    #[case::min_0(0)]
+    #[should_panic]
+    #[case::max_1001(1001)]
+    fn test_width_new(#[case] width: u32) {
+        assert!(Width::new(width).is_ok());
+    }
+
+    #[rstest]
+    #[case::min_1(1)]
+    #[case::max_1000(1000)]
+    #[case::normal(50)]
+    #[should_panic]
+    #[case::min_0(0)]
+    #[should_panic]
+    #[case::max_1001(1001)]
+    fn test_height_new(#[case] height: u32) {
+        assert!(Height::new(height).is_ok());
+    }
+
+    #[test]
+    fn test_new_by_unit_size() {
+        let window_size = WindowSize::new_by_unit_size();
+
+        assert_eq!(window_size.width().value(), UNIT_SIZE.0 * UNIT_LENGTH.0);
+        assert_eq!(window_size.height().value(), UNIT_SIZE.1 * UNIT_LENGTH.1);
+    }
+}