diff --git a/core/src/main/java/wtf/beatrice/retrorender/GameScreen.java b/core/src/main/java/wtf/beatrice/retrorender/GameScreen.java
index 26fa89c..a9a96d4 100644
--- a/core/src/main/java/wtf/beatrice/retrorender/GameScreen.java
+++ b/core/src/main/java/wtf/beatrice/retrorender/GameScreen.java
@@ -40,7 +40,7 @@ public class GameScreen implements Screen {
     private SpriteBatch screenBatch;
 
     private static final int RETRO_WIDTH = 320;
-    private static final int RETRO_HEIGHT = 180;
+    private static final int RETRO_HEIGHT = 240;
 
     private boolean showHud = false;
 
@@ -51,8 +51,8 @@ public class GameScreen implements Screen {
     private void initCamera() {
         camera = new PerspectiveCamera(
             67f,
-            Gdx.graphics.getWidth(),
-            Gdx.graphics.getHeight()
+            RETRO_WIDTH,
+            RETRO_HEIGHT
         );
 
         // near/far + initial direction handled in controller constructor
@@ -167,26 +167,46 @@ public class GameScreen implements Screen {
 
         frameBuffer.end();
 
-        // -- scale framebuffer to screen
-        int screenW = Gdx.graphics.getWidth();
-        int screenH = Gdx.graphics.getHeight();
-        int fbWidth = Gdx.graphics.getBackBufferWidth();
-        int fbHeight = Gdx.graphics.getBackBufferHeight();
+        // -- scale framebuffer to screen, preserve aspect ratio --
+        int windowW = Gdx.graphics.getWidth(); // logical size
+        int windowH = Gdx.graphics.getHeight();
 
-        Gdx.gl.glViewport(0, 0, fbWidth, fbHeight);
+        int backW = Gdx.graphics.getBackBufferWidth(); // actual GL framebuffer
+        int backH = Gdx.graphics.getBackBufferHeight();
+
+        // compute how much we can scale the FBO into the window
+        float scale = Math.min(
+            windowW / (float) RETRO_WIDTH,
+            windowH / (float) RETRO_HEIGHT
+        );
+
+        // strict integer scaling
+        // scale = (float)Math.max(1, Math.floor(scale));
+
+        int drawW = Math.round(RETRO_WIDTH * scale);
+        int drawH = Math.round(RETRO_HEIGHT * scale);
+
+        // center the image
+        int offsetX = (windowW - drawW) / 2;
+        int offsetY = (windowH - drawH) / 2;
+
+        // viewport in backbuffer coordinates
+        Gdx.gl.glViewport(0, 0, backW, backH);
         Gdx.gl.glClearColor(0f, 0f, 0f, 1f);
         Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
 
+        // projection in window (logical) coordinates
+        screenBatch.getProjectionMatrix().setToOrtho2D(0, 0, windowW, windowH);
+
         screenBatch.begin();
-        // draw retro texture stretched to window size
-        screenBatch.draw(frameRegion, 0, 0, screenW, screenH);
+        screenBatch.draw(frameRegion, offsetX, offsetY, drawW, drawH);
         screenBatch.end();
     }
 
     @Override
     public void resize(int width, int height) {
-        camera.viewportWidth = width;
-        camera.viewportHeight = height;
+        camera.viewportWidth = RETRO_WIDTH;
+        camera.viewportHeight = RETRO_HEIGHT;
         camera.update();
 
         cameraController.resize(width, height);
@@ -207,7 +227,7 @@ public class GameScreen implements Screen {
         modelBatch.dispose();
         hud.dispose();
 
-        if (shadowBatch != null) shadowBatch.dispose();
-        if (shadowLight != null) shadowLight.dispose();
+        shadowBatch.dispose();
+        shadowLight.dispose();
     }
 }
diff --git a/core/src/main/java/wtf/beatrice/retrorender/engine/FpsCameraController.java b/core/src/main/java/wtf/beatrice/retrorender/engine/FpsCameraController.java
index a419172..6dede62 100644
--- a/core/src/main/java/wtf/beatrice/retrorender/engine/FpsCameraController.java
+++ b/core/src/main/java/wtf/beatrice/retrorender/engine/FpsCameraController.java
@@ -17,7 +17,7 @@ public class FpsCameraController {
     private float yaw = 0f;
     private float pitch = 0f;
 
-    private float eyeHeight = 1.6f;
+    private float eyeHeight = 1.8f;
     private float velocityY = 0f;
     private float gravity = -50f;
     private float jumpSpeed = 12f;
diff --git a/core/src/main/java/wtf/beatrice/retrorender/engine/World3D.java b/core/src/main/java/wtf/beatrice/retrorender/engine/World3D.java
index 1266b8f..0a39ef6 100644
--- a/core/src/main/java/wtf/beatrice/retrorender/engine/World3D.java
+++ b/core/src/main/java/wtf/beatrice/retrorender/engine/World3D.java
@@ -42,10 +42,10 @@ public class World3D {
         );
 
         // plane size (halfSize in X/Z)
-        float halfSize = 20f;
+        float halfSize = 32f;
 
         // times the texture repeats across the whole plane
-        float tileScale = 8f;
+        float tileScale = 16f;
 
         modelBuilder.begin();
 
diff --git a/lwjgl3/src/main/java/wtf/beatrice/retrorender/lwjgl3/Lwjgl3Launcher.java b/lwjgl3/src/main/java/wtf/beatrice/retrorender/lwjgl3/Lwjgl3Launcher.java
index 9513fc5..2b304dd 100644
--- a/lwjgl3/src/main/java/wtf/beatrice/retrorender/lwjgl3/Lwjgl3Launcher.java
+++ b/lwjgl3/src/main/java/wtf/beatrice/retrorender/lwjgl3/Lwjgl3Launcher.java
@@ -29,6 +29,7 @@ public class Lwjgl3Launcher {
         //// You may also need to configure GPU drivers to fully disable Vsync; this can cause screen tearing.
 
         configuration.setWindowedMode(640, 480);
+
         //// You can change these files; they are in lwjgl3/src/main/resources/ .
         //// They can also be loaded from the root of assets/ .
         configuration.setWindowIcon("libgdx128.png", "libgdx64.png", "libgdx32.png", "libgdx16.png");
@@ -42,4 +43,4 @@ public class Lwjgl3Launcher {
 
         return configuration;
     }
-}
\ No newline at end of file
+}