diff --git a/shaders/flat.frag b/shaders/flat.frag
index b457327..c87c603 100644
--- a/shaders/flat.frag
+++ b/shaders/flat.frag
@@ -7,7 +7,7 @@ varying vec2 vTexCoord;
 
 void main() {
   vec4 texColor = texture2D(u_texture, vTexCoord);
-  if(texColor == vec4(1, 0, 1, 1) || texColor == vec4(1, 0, 0, 1) || texColor.w == 0) {
+  if(texColor == vec4(1, 0, 1, 1) || texColor == vec4(1, 0, 0, 1) || texColor.w == 0.0) {
     discard;
   } else {
     gl_FragColor = texColor * vColor;
diff --git a/src/main/java/xyz/valnet/engine/App.java b/src/main/java/xyz/valnet/engine/App.java
index 009f3bf..f2c781f 100644
--- a/src/main/java/xyz/valnet/engine/App.java
+++ b/src/main/java/xyz/valnet/engine/App.java
@@ -136,6 +136,7 @@ public class App {
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LEQUAL);
     glDepthMask(true);
+    glfwSwapInterval(1);
 
     game.start();
   }
diff --git a/src/main/java/xyz/valnet/hadean/HadeanGame.java b/src/main/java/xyz/valnet/hadean/HadeanGame.java
index 585d4d8..fecc50a 100644
--- a/src/main/java/xyz/valnet/hadean/HadeanGame.java
+++ b/src/main/java/xyz/valnet/hadean/HadeanGame.java
@@ -31,31 +31,31 @@ public class HadeanGame extends Game {
     renderDebugInfo();
   }
 
-  // private Runtime runtime = Runtime.getRuntime();
-  // private static Vector4f fontColor = new Vector4f(0, 1, 1, 1);
+  private Runtime runtime = Runtime.getRuntime();
+  private static Vector4f fontColor = new Vector4f(0, 1, 1, 1);
 
   private void renderDebugInfo() {
     
-    // long allocated = runtime.totalMemory();
-    // long max = runtime.maxMemory();
+    long allocated = runtime.totalMemory();
+    long max = runtime.maxMemory();
 
-    // Assets.flat.pushColor(Vector4f.black);
-    // Assets.font.drawString("FPS: " + Math.round(averageFPS) + "/" + measuredFPS + " | AVG/MEASURED", 1, 1);
-    // Assets.font.drawString("Mouse: <" + App.mouseX + ", " + App.mouseY + ">", 1, 17);
-    // Assets.font.drawString("MEMORY: " + (int)((allocated / (double)max) * 100) + "% (" + (allocated / (1024 * 1024)) + "/" + (max / (1024 * 1024)) + "MB)", 1, 33);
-    // Assets.font.drawString("IPATHABLE", 1, 49);
-    // Assets.font.drawString("", 1, 65);
-    // Assets.font.drawString("", 1, 81);
+    Assets.flat.pushColor(Vector4f.black);
+    Assets.font.drawString("FPS: " + Math.round(averageFPS) + "/" + measuredFPS + " | AVG/MEASURED", 1, 1);
+    Assets.font.drawString("Mouse: <" + App.mouseX + ", " + App.mouseY + ">", 1, 17);
+    Assets.font.drawString("MEMORY: " + (int)((allocated / (double)max) * 100) + "% (" + (allocated / (1024 * 1024)) + "/" + (max / (1024 * 1024)) + "MB)", 1, 33);
+    Assets.font.drawString("IPATHABLE", 1, 49);
+    Assets.font.drawString("", 1, 65);
+    Assets.font.drawString("", 1, 81);
 
-    // Assets.flat.swapColor(fontColor);
-    // Assets.font.drawString("FPS: " + Math.round(averageFPS) + "/" + measuredFPS + " | AVG/MEASURED", 0, 0);
-    // Assets.font.drawString("Mouse: <" + App.mouseX + ", " + App.mouseY + ">", 0, 16);
-    // Assets.font.drawString("MEMORY: " + (int)((allocated / (double)max) * 100) + "% (" + (allocated / (1024 * 1024)) + "/" + (max / (1024 * 1024)) + "MB)", 0, 32);
-    // Assets.font.drawString("IPATHABLE", 0, 48);
-    // Assets.font.drawString("", 0, 64);
-    // Assets.font.drawString("", 0, 80);
+    Assets.flat.swapColor(fontColor);
+    Assets.font.drawString("FPS: " + Math.round(averageFPS) + "/" + measuredFPS + " | AVG/MEASURED", 0, 0);
+    Assets.font.drawString("Mouse: <" + App.mouseX + ", " + App.mouseY + ">", 0, 16);
+    Assets.font.drawString("MEMORY: " + (int)((allocated / (double)max) * 100) + "% (" + (allocated / (1024 * 1024)) + "/" + (max / (1024 * 1024)) + "MB)", 0, 32);
+    Assets.font.drawString("IPATHABLE", 0, 48);
+    Assets.font.drawString("", 0, 64);
+    Assets.font.drawString("", 0, 80);
     
-    // Assets.flat.popColor();
+    Assets.flat.popColor();
   }
 
   // receive the updated matrix every frame for the actual window.
diff --git a/src/main/java/xyz/valnet/hadean/gameobjects/inputlayer/BuildLayer.java b/src/main/java/xyz/valnet/hadean/gameobjects/inputlayer/BuildLayer.java
index 1b23aa7..6476f9c 100644
--- a/src/main/java/xyz/valnet/hadean/gameobjects/inputlayer/BuildLayer.java
+++ b/src/main/java/xyz/valnet/hadean/gameobjects/inputlayer/BuildLayer.java
@@ -7,6 +7,7 @@ import xyz.valnet.engine.scenegraph.GameObject;
 import xyz.valnet.engine.scenegraph.IMouseCaptureArea;
 import xyz.valnet.hadean.gameobjects.Camera;
 import xyz.valnet.hadean.interfaces.IBuildLayerListener;
+import xyz.valnet.hadean.util.Assets;
 import xyz.valnet.hadean.util.Layers;
 
 public class BuildLayer extends GameObject implements IMouseCaptureArea {
@@ -30,6 +31,14 @@ public class BuildLayer extends GameObject implements IMouseCaptureArea {
     broadcastWorldCoords();
   }
 
+  @Override
+  public void render() {
+    if(mouseDown && active) {
+      Assets.selectionFrame.draw(screenX, screenY, App.mouseX - screenX, App.mouseY - screenY);
+      camera.screen2world(App.mouseX, App.mouseY);
+    }
+  }
+
   public void activate(IBuildLayerListener listener) {
     active = true;
     this.listener = listener;
@@ -57,6 +66,7 @@ public class BuildLayer extends GameObject implements IMouseCaptureArea {
   }
 
   private float x, y;
+  private int screenX, screenY;
   private boolean mouseDown = false;
 
   @Override
@@ -67,6 +77,8 @@ public class BuildLayer extends GameObject implements IMouseCaptureArea {
     } else if(button == 0 && active && hovered) {
       Vector2f worldcoords = camera.screen2world(App.mouseX, App.mouseY);
       mouseDown = true;
+      screenX = App.mouseX;
+      screenY = App.mouseY;
       x = worldcoords.x;
       y = worldcoords.y;
     }
diff --git a/src/main/java/xyz/valnet/hadean/gameobjects/tabs/BuildTab.java b/src/main/java/xyz/valnet/hadean/gameobjects/tabs/BuildTab.java
index ae8d408..8e3beb4 100644
--- a/src/main/java/xyz/valnet/hadean/gameobjects/tabs/BuildTab.java
+++ b/src/main/java/xyz/valnet/hadean/gameobjects/tabs/BuildTab.java
@@ -67,11 +67,17 @@ public class BuildTab extends Tab implements ISelectionChangeListener, IMouseCap
       }
 
       @Override
-      public void select(float nx, float ny, float nw, float nh) {
-        x = (int)Math.floor(nx);
-        y = (int)Math.floor(ny);
-        ITileThing thing = new FarmPlot(x, y);
-        terrain.getTile(x, y).placeThing(thing);
+      public void select(float x1, float y1, float x2, float y2) {
+        int ix1 = (int)Math.floor(x1);
+        int iy1 = (int)Math.floor(y1);
+        int ix2 = (int)Math.floor(x2);
+        int iy2 = (int)Math.floor(y2);
+        for(int x = ix1; x <= ix2; x ++) {
+          for(int y = iy1; y <= iy2; y ++) {
+            ITileThing thing = new FarmPlot(x, y);
+            terrain.getTile(x, y).placeThing(thing);
+          }
+        }
         opened.set(false);
       }