diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/context/Context.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/context/Context.java
index 8231109a..0aef82f8 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/context/Context.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/context/Context.java
@@ -2,7 +2,7 @@ package com.bartlomiejpluta.base.api.game.context;
 
 import com.bartlomiejpluta.base.api.game.camera.Camera;
 import com.bartlomiejpluta.base.api.game.entity.Entity;
-import com.bartlomiejpluta.base.api.game.gui.GUI;
+import com.bartlomiejpluta.base.api.game.gui.base.GUI;
 import com.bartlomiejpluta.base.api.game.image.Image;
 import com.bartlomiejpluta.base.api.game.screen.Screen;
 
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Bounds.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Bounds.java
deleted file mode 100644
index c0760169..00000000
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Bounds.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.bartlomiejpluta.base.api.game.gui;
-
-public class Bounds {
-   private float minX;
-   private float minY;
-   private float maxX;
-   private float maxY;
-
-   public void update(float minX, float minY, float maxX, float maxY) {
-      this.minX = minX;
-      this.minY = minY;
-      this.maxX = maxX;
-      this.maxY = maxY;
-   }
-
-   public float getMinX() {
-      return minX;
-   }
-
-   public float getMinY() {
-      return minY;
-   }
-
-   public float getMaxX() {
-      return maxX;
-   }
-
-   public float getMaxY() {
-      return maxY;
-   }
-
-   public float getWidth() {
-      return maxX - minX;
-   }
-
-   public float getHeight() {
-      return maxY - minY;
-   }
-}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Color.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Color.java
deleted file mode 100644
index 37648679..00000000
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Color.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package com.bartlomiejpluta.base.api.game.gui;
-
-public interface Color {
-   float getRed();
-
-   float getGreen();
-
-   float getBlue();
-
-   float getAlpha();
-
-   void setRed(float value);
-
-   void setGreen(float value);
-
-   void setBlue(float value);
-
-   void setAlpha(float value);
-
-   void setColor(float red, float green, float blue);
-
-   void setColor(float red, float green, float blue, float alpha);
-}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Container.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Container.java
deleted file mode 100644
index f7a1edb9..00000000
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Container.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.bartlomiejpluta.base.api.game.gui;
-
-import java.util.LinkedList;
-import java.util.List;
-
-public abstract class Container extends Component {
-   protected final List<Component> children = new LinkedList<>();
-
-   public void addChild(Component component) {
-      this.children.add(component);
-      component.setParent(this);
-   }
-}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Font.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Font.java
deleted file mode 100644
index 2a9700b9..00000000
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Font.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package com.bartlomiejpluta.base.api.game.gui;
-
-import java.nio.ByteBuffer;
-
-public interface Font {
-   String getName();
-
-   ByteBuffer getByteBuffer();
-}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/GUI.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/GUI.java
similarity index 85%
rename from api/src/main/java/com/bartlomiejpluta/base/api/game/gui/GUI.java
rename to api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/GUI.java
index f94d6a12..892add8c 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/GUI.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/GUI.java
@@ -1,4 +1,4 @@
-package com.bartlomiejpluta.base.api.game.gui;
+package com.bartlomiejpluta.base.api.game.gui.base;
 
 import com.bartlomiejpluta.base.api.internal.gc.Disposable;
 import com.bartlomiejpluta.base.api.internal.render.Renderable;
@@ -30,11 +30,11 @@ public interface GUI extends Renderable, Disposable {
 
    void setTextAlignment(int alignment);
 
-   void putText(float x, float y, CharSequence text, Bounds outTextBounds);
+   void putText(float x, float y, CharSequence text, float[] outTextBounds);
 
    void putText(float x, float y, CharSequence text);
 
-   void putTextBox(float x, float y, float lineWidth, CharSequence text, Bounds outTextBoxBounds);
+   void putTextBox(float x, float y, float lineWidth, CharSequence text, float[] outTextBounds);
 
    void putTextBox(float x, float y, float lineWidth, CharSequence text);
 }
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Widget.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/Widget.java
similarity index 96%
rename from api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Widget.java
rename to api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/Widget.java
index 7ae0b4d5..d6363d76 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Widget.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/Widget.java
@@ -1,4 +1,4 @@
-package com.bartlomiejpluta.base.api.game.gui;
+package com.bartlomiejpluta.base.api.game.gui.base;
 
 import com.bartlomiejpluta.base.api.game.screen.Screen;
 
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/BaseContainer.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/BaseContainer.java
new file mode 100644
index 00000000..d3a6b778
--- /dev/null
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/BaseContainer.java
@@ -0,0 +1,66 @@
+package com.bartlomiejpluta.base.api.game.gui.component;
+
+import java.util.LinkedList;
+import java.util.List;
+
+public abstract class BaseContainer extends Component implements Container {
+   protected final List<Component> children = new LinkedList<>();
+
+   @Override
+   public void add(Component component) {
+      this.children.add(component);
+      component.setParent(this);
+   }
+
+   @Override
+   public void remove(Component component) {
+      this.children.remove(component);
+      component.setParent(null);
+   }
+
+   protected float maxChildrenWidth() {
+      var theWidestChild = 0.0f;
+
+      for (var child : children) {
+         var width = child.getMarginLeft() + child.getWidth() + child.getMarginRight();
+         if (width > theWidestChild) {
+            theWidestChild = width;
+         }
+      }
+
+      return theWidestChild;
+   }
+
+   protected float maxChildrenHeight() {
+      var theHighestChild = 0.0f;
+
+      for (var child : children) {
+         var height = child.getMarginTop() + child.getHeight() + child.getMarginBottom();
+         if (height > theHighestChild) {
+            theHighestChild = height;
+         }
+      }
+
+      return theHighestChild;
+   }
+
+   protected float sumChildrenWidth() {
+      var childrenWidth = 0.0f;
+
+      for (var child : children) {
+         childrenWidth += child.getMarginLeft() + child.getWidth() + child.getMarginRight();
+      }
+
+      return childrenWidth;
+   }
+
+   protected float sumChildrenHeight() {
+      var childrenHeight = 0.0f;
+
+      for (var child : children) {
+         childrenHeight += child.getMarginTop() + child.getHeight() + child.getMarginBottom();
+      }
+
+      return childrenHeight;
+   }
+}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Component.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Component.java
similarity index 97%
rename from api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Component.java
rename to api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Component.java
index 42d38194..3aa10f9f 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/Component.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Component.java
@@ -1,4 +1,6 @@
-package com.bartlomiejpluta.base.api.game.gui;
+package com.bartlomiejpluta.base.api.game.gui.component;
+
+import com.bartlomiejpluta.base.api.game.gui.base.Widget;
 
 public abstract class Component implements Widget {
    protected Widget parent;
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Container.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Container.java
new file mode 100644
index 00000000..ecb8aeba
--- /dev/null
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/Container.java
@@ -0,0 +1,9 @@
+package com.bartlomiejpluta.base.api.game.gui.component;
+
+import com.bartlomiejpluta.base.api.game.gui.base.Widget;
+
+public interface Container extends Widget {
+   void add(Component component);
+
+   void remove(Component component);
+}
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/HBox.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/HLayout.java
similarity index 50%
rename from api/src/main/java/com/bartlomiejpluta/base/api/game/gui/HBox.java
rename to api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/HLayout.java
index 293dd0df..901d865f 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/HBox.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/HLayout.java
@@ -1,32 +1,18 @@
-package com.bartlomiejpluta.base.api.game.gui;
+package com.bartlomiejpluta.base.api.game.gui.component;
 
+import com.bartlomiejpluta.base.api.game.gui.base.GUI;
 import com.bartlomiejpluta.base.api.game.screen.Screen;
 
-public class HBox extends Container {
+public class HLayout extends BaseContainer {
 
    @Override
    public float getWidth() {
-      var childrenWidth = 0.0f;
-
-      for (var child : children) {
-         childrenWidth += child.getMarginLeft() + child.getWidth() + child.getMarginRight();
-      }
-
-      return paddingLeft + childrenWidth + paddingRight;
+      return paddingLeft + sumChildrenWidth() + paddingRight;
    }
 
    @Override
    public float getHeight() {
-      var theHighestChild = 0.0f;
-
-      for (var child : children) {
-         var height = child.getMarginTop() + child.getHeight() + child.getMarginBottom();
-         if (height > theHighestChild) {
-            theHighestChild = height;
-         }
-      }
-
-      return paddingTop + theHighestChild + paddingBottom;
+      return paddingTop + maxChildrenHeight() + paddingBottom;
    }
 
    @Override
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/VBox.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/VLayout.java
similarity index 50%
rename from api/src/main/java/com/bartlomiejpluta/base/api/game/gui/VBox.java
rename to api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/VLayout.java
index 48f0a963..d11746eb 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/VBox.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/component/VLayout.java
@@ -1,32 +1,18 @@
-package com.bartlomiejpluta.base.api.game.gui;
+package com.bartlomiejpluta.base.api.game.gui.component;
 
+import com.bartlomiejpluta.base.api.game.gui.base.GUI;
 import com.bartlomiejpluta.base.api.game.screen.Screen;
 
-public class VBox extends Container {
+public class VLayout extends BaseContainer {
 
    @Override
    public float getWidth() {
-      var theWidestChild = 0.0f;
-
-      for (var child : children) {
-         var width = child.getMarginLeft() + child.getWidth() + child.getMarginRight();
-         if (width > theWidestChild) {
-            theWidestChild = width;
-         }
-      }
-
-      return paddingLeft + theWidestChild + paddingRight;
+      return paddingLeft + maxChildrenWidth() + paddingRight;
    }
 
    @Override
    public float getHeight() {
-      var childrenHeight = 0.0f;
-
-      for (var child : children) {
-         childrenHeight += child.getMarginTop() + child.getHeight() + child.getMarginBottom();
-      }
-
-      return paddingTop + childrenHeight + paddingBottom;
+      return paddingTop + sumChildrenHeight() + paddingBottom;
    }
 
    @Override
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/DefaultFontManager.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/DefaultFontManager.java
index 99e7f7bb..f9ece976 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/DefaultFontManager.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/DefaultFontManager.java
@@ -1,9 +1,8 @@
 package com.bartlomiejpluta.base.engine.gui.manager;
 
-import com.bartlomiejpluta.base.api.game.gui.Font;
 import com.bartlomiejpluta.base.engine.error.AppException;
 import com.bartlomiejpluta.base.engine.gui.asset.FontAsset;
-import com.bartlomiejpluta.base.engine.gui.model.DefaultFont;
+import com.bartlomiejpluta.base.engine.gui.model.Font;
 import com.bartlomiejpluta.base.engine.project.config.ProjectConfiguration;
 import com.bartlomiejpluta.base.engine.util.res.ResourcesManager;
 import lombok.RequiredArgsConstructor;
@@ -47,6 +46,6 @@ public class DefaultFontManager implements FontManager {
          fontBuffers.put(uid, buffer);
       }
 
-      return new DefaultFont(uid, buffer.duplicate());
+      return new Font(uid, buffer.duplicate());
    }
 }
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/FontManager.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/FontManager.java
index 3f2ad9d7..fb840955 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/FontManager.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/manager/FontManager.java
@@ -1,8 +1,8 @@
 package com.bartlomiejpluta.base.engine.gui.manager;
 
-import com.bartlomiejpluta.base.api.game.gui.Font;
 import com.bartlomiejpluta.base.engine.common.manager.AssetManager;
 import com.bartlomiejpluta.base.engine.gui.asset.FontAsset;
+import com.bartlomiejpluta.base.engine.gui.model.Font;
 
 public interface FontManager extends AssetManager<FontAsset, Font> {
 }
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/DefaultFont.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/Font.java
similarity index 72%
rename from engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/DefaultFont.java
rename to engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/Font.java
index 37a1e66f..4ab891d0 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/DefaultFont.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/Font.java
@@ -1,6 +1,5 @@
 package com.bartlomiejpluta.base.engine.gui.model;
 
-import com.bartlomiejpluta.base.api.game.gui.Font;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 
@@ -8,7 +7,7 @@ import java.nio.ByteBuffer;
 
 @Getter
 @RequiredArgsConstructor
-public class DefaultFont implements Font {
+public class Font {
    private final String name;
    private final ByteBuffer byteBuffer;
 }
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/NanoVGColorAdapter.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/NanoVGColorAdapter.java
deleted file mode 100644
index b5a5a741..00000000
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/model/NanoVGColorAdapter.java
+++ /dev/null
@@ -1,78 +0,0 @@
-package com.bartlomiejpluta.base.engine.gui.model;
-
-import com.bartlomiejpluta.base.api.game.gui.Color;
-import com.bartlomiejpluta.base.api.internal.gc.Disposable;
-import org.lwjgl.BufferUtils;
-import org.lwjgl.nanovg.NVGColor;
-
-public class NanoVGColorAdapter extends NVGColor implements Color, Disposable {
-
-   public NanoVGColorAdapter(float red, float green, float blue, float alpha) {
-      super(BufferUtils.createByteBuffer(SIZEOF));
-
-      r(red);
-      g(green);
-      b(blue);
-      a(alpha);
-   }
-
-   @Override
-   public float getRed() {
-      return r();
-   }
-
-   @Override
-   public float getGreen() {
-      return g();
-   }
-
-   @Override
-   public float getBlue() {
-      return b();
-   }
-
-   @Override
-   public float getAlpha() {
-      return a();
-   }
-
-   @Override
-   public void setRed(float value) {
-      r(value);
-   }
-
-   @Override
-   public void setGreen(float value) {
-      g(value);
-   }
-
-   @Override
-   public void setBlue(float value) {
-      b(value);
-   }
-
-   @Override
-   public void setAlpha(float value) {
-      a(value);
-   }
-
-   @Override
-   public void setColor(float red, float green, float blue) {
-      r(red);
-      g(green);
-      b(blue);
-   }
-
-   @Override
-   public void setColor(float red, float green, float blue, float alpha) {
-      r(red);
-      g(green);
-      b(blue);
-      a(alpha);
-   }
-
-   @Override
-   public void dispose() {
-      free();
-   }
-}
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGGUI.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGGUI.java
index e0d52c66..e571fc31 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGGUI.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGGUI.java
@@ -1,9 +1,8 @@
 package com.bartlomiejpluta.base.engine.gui.render;
 
 import com.bartlomiejpluta.base.api.game.camera.Camera;
-import com.bartlomiejpluta.base.api.game.gui.Bounds;
-import com.bartlomiejpluta.base.api.game.gui.GUI;
-import com.bartlomiejpluta.base.api.game.gui.Widget;
+import com.bartlomiejpluta.base.api.game.gui.base.GUI;
+import com.bartlomiejpluta.base.api.game.gui.base.Widget;
 import com.bartlomiejpluta.base.api.game.screen.Screen;
 import com.bartlomiejpluta.base.api.internal.render.ShaderManager;
 import com.bartlomiejpluta.base.engine.error.AppException;
@@ -68,10 +67,9 @@ public class NanoVGGUI implements GUI {
    }
 
    @Override
-   public void putText(float x, float y, CharSequence text, Bounds outTextBounds) {
+   public void putText(float x, float y, CharSequence text, float[] outTextBounds) {
       nvgText(context, x, y, text);
-      nvgTextBounds(context, x, y, text, boundBuffer);
-      outTextBounds.update(boundBuffer[0], boundBuffer[1], boundBuffer[2], boundBuffer[3]);
+      nvgTextBounds(context, x, y, text, outTextBounds);
    }
 
    @Override
@@ -80,10 +78,9 @@ public class NanoVGGUI implements GUI {
    }
 
    @Override
-   public void putTextBox(float x, float y, float lineWidth, CharSequence text, Bounds outTextBoxBounds) {
+   public void putTextBox(float x, float y, float lineWidth, CharSequence text, float[] outTextBounds) {
       nvgTextBox(context, x, y, lineWidth, text);
-      nvgTextBoxBounds(context, x, y, lineWidth, text, boundBuffer);
-      outTextBoxBounds.update(boundBuffer[0], boundBuffer[1], boundBuffer[2], boundBuffer[3]);
+      nvgTextBoxBounds(context, x, y, lineWidth, text, outTextBounds);
    }
 
    @Override
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/project/model/RenderableContext.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/project/model/RenderableContext.java
index b2a262f4..4f959dbb 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/project/model/RenderableContext.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/project/model/RenderableContext.java
@@ -3,7 +3,7 @@ package com.bartlomiejpluta.base.engine.project.model;
 import com.bartlomiejpluta.base.api.game.camera.Camera;
 import com.bartlomiejpluta.base.api.game.context.Context;
 import com.bartlomiejpluta.base.api.game.entity.Entity;
-import com.bartlomiejpluta.base.api.game.gui.GUI;
+import com.bartlomiejpluta.base.api.game.gui.base.GUI;
 import com.bartlomiejpluta.base.api.game.image.Image;
 import com.bartlomiejpluta.base.api.game.map.handler.MapHandler;
 import com.bartlomiejpluta.base.api.game.screen.Screen;