diff --git a/src/main.js b/src/main.js
index 445ff3e..cbb4964 100644
--- a/src/main.js
+++ b/src/main.js
@@ -10,6 +10,9 @@ const GROUND_ART_SURFACE_OFFSET = 20;
 const LOG_FRAME_HEIGHT = 79;
 const LOG_ART_SURFACE_OFFSET = 17;
 const LOG_COLLIDER_HEIGHT = 16;
+const LOG_SURFACE_LEFT = 15;
+const LOG_SURFACE_RIGHT = 266;
+const LOG_FRAME_WIDTH = 269;
 
 class ForestScene extends Phaser.Scene {
   constructor() {
@@ -121,6 +124,9 @@ class ForestScene extends Phaser.Scene {
 
 
     addFrame('terrain-sheet', 'ground-main', 24, 32, 341, 107);
+    // Interior-only repeat crop: removes the standalone tile's visible
+    // left/right border so adjacent ground pieces join cleanly.
+    addFrame('terrain-sheet', 'ground-repeat', 52, 32, 285, 107);
     addFrame('terrain-sheet', 'log-platform', 21, 327, 269, 79);
     addFrame('terrain-sheet', 'root-platform', 1023, 672, 402, 168);
 
@@ -385,8 +391,10 @@ class ForestScene extends Phaser.Scene {
     this.platforms.add(ground);
 
     const groundArtY = GROUND_SURFACE_Y - (GROUND_ART_SURFACE_OFFSET * GROUND_ART_SCALE);
-    for (let x = 165; x < WORLD_WIDTH + 340; x += 320) {
-      this.add.image(x, groundArtY, 'terrain-sheet', 'ground-main')
+    const groundTileWidth = 285 * GROUND_ART_SCALE;
+    const groundTileStep = groundTileWidth - 3; // tiny overlap avoids antialias hairlines
+    for (let x = groundTileWidth / 2; x < WORLD_WIDTH + groundTileWidth; x += groundTileStep) {
+      this.add.image(x, groundArtY, 'terrain-sheet', 'ground-repeat')
         .setOrigin(0.5, 0)
         .setScale(GROUND_ART_SCALE)
         .setDepth(3);
@@ -413,10 +421,15 @@ class ForestScene extends Phaser.Scene {
         .setScale(scale)
         .setDepth(6);
 
+      const surfaceWidth = (LOG_SURFACE_RIGHT - LOG_SURFACE_LEFT) * scale;
+      const surfaceCenterOffset = (
+        ((LOG_SURFACE_LEFT + LOG_SURFACE_RIGHT) / 2) - (LOG_FRAME_WIDTH / 2)
+      ) * scale;
+
       const collider = this.add.rectangle(
-        x,
+        x + surfaceCenterOffset,
         surfaceY + (LOG_COLLIDER_HEIGHT / 2),
-        Math.max(130, visual.displayWidth * 0.82),
+        surfaceWidth,
         LOG_COLLIDER_HEIGHT,
         0x000000,
         0