diff --git a/src/js/game/shape_definition.js b/src/js/game/shape_definition.js
index 4473c182..9dc40042 100644
--- a/src/js/game/shape_definition.js
+++ b/src/js/game/shape_definition.js
@@ -470,31 +470,13 @@ export class ShapeDefinition extends BasicSerializableObject {
      */
     cloneAndUnstack() {
         const lowerLayers = this.internalCloneLayers();
+        const upperLayers = [];
 
         if (this.isEntirelyEmpty()) {
             assert(false, "Can not stack entirely empty definition");
         }
 
-        // Check if there is only one layer
-        if (this.layers.length === 1) {
-            return [new ShapeDefinition({ layers: lowerLayers })];
-        }
-
-        let upperLayers = [];
-
-        layerCheck:
-        for (let i = lowerLayers.length - 1; i >= 0; --i) {
-            const layerToCheck = lowerLayers[i];
-
-            for (let quadrantIndex = 0; quadrantIndex < 4; ++quadrantIndex) {
-                // Check for a layer with items on it to remove
-                if (layerToCheck[quadrantIndex]) {
-                    upperLayers.push(layerToCheck);
-                    lowerLayers[i] = [null, null, null, null];
-                    break layerCheck;
-                }
-            }
-        }
+        upperLayers.push(lowerLayers.pop());
 
         return [
             new ShapeDefinition({ layers: lowerLayers }),
diff --git a/src/js/game/systems/item_processor.js b/src/js/game/systems/item_processor.js
index be229dae..94d8a238 100644
--- a/src/js/game/systems/item_processor.js
+++ b/src/js/game/systems/item_processor.js
@@ -23,7 +23,7 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
             // First of all, process the current recipe
             processorComp.secondsUntilEject = Math_max(
                 0,
-                processorComp.secondsUntilEject - this.root.dynamicTickrate.deltaSeconds,
+                processorComp.secondsUntilEject - this.root.dynamicTickrate.deltaSeconds
             );
 
             // Check if we have any finished items we can eject
@@ -196,7 +196,7 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
 
                 const stackedDefinition = this.root.shapeDefinitionMgr.shapeActionStack(
                     lowerItem.definition,
-                    upperItem.definition,
+                    upperItem.definition
                 );
                 outItems.push({
                     item: new ShapeItem(stackedDefinition),
@@ -213,10 +213,13 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
                 const unstackedDefinitions = this.root.shapeDefinitionMgr.shapeActionUnstack(item.definition);
 
                 for (let i = 0; i < unstackedDefinitions.length; ++i) {
-                    outItems.push({
-                        item: new ShapeItem(unstackedDefinitions[i]),
-                        requiredSlot: i,
-                    });
+                    const definition = unstackedDefinitions[i];
+                    if (!definition.isEntirelyEmpty()) {
+                        outItems.push({
+                            item: new ShapeItem(definition),
+                            requiredSlot: i,
+                        });
+                    }
                 }
                 break;
             }
@@ -261,7 +264,7 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
 
                 const colorizedDefinition = this.root.shapeDefinitionMgr.shapeActionPaintWith(
                     shapeItem.definition,
-                    colorItem.color,
+                    colorItem.color
                 );
 
                 outItems.push({
@@ -284,12 +287,12 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
 
                 const colorizedDefinition1 = this.root.shapeDefinitionMgr.shapeActionPaintWith(
                     shapeItem1.definition,
-                    colorItem.color,
+                    colorItem.color
                 );
 
                 const colorizedDefinition2 = this.root.shapeDefinitionMgr.shapeActionPaintWith(
                     shapeItem2.definition,
-                    colorItem.color,
+                    colorItem.color
                 );
                 outItems.push({
                     item: new ShapeItem(colorizedDefinition1),
@@ -319,7 +322,7 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
 
                 const colorizedDefinition = this.root.shapeDefinitionMgr.shapeActionPaintWith4Colors(
                     shapeItem.definition,
-                    [colorItem2.color, colorItem3.color, colorItem4.color, colorItem1.color],
+                    [colorItem2.color, colorItem3.color, colorItem4.color, colorItem1.color]
                 );
 
                 outItems.push({
diff --git a/translations/base-en.yaml b/translations/base-en.yaml
index 2a822991..356c41b0 100644
--- a/translations/base-en.yaml
+++ b/translations/base-en.yaml
@@ -434,6 +434,10 @@ storyRewards:
         title: Storage Buffer
         desc: You have unlocked a variant of the <strong>trash</strong> - It allows to store items up to a given capacity!
 
+    reward_unstacker:
+        title: Unstacker
+        desc: You can now unstack shapes with the <strong>unstacker</strong>! The top shape is taken off the input and comes out the right output.
+
     reward_freeplay:
         title: Freeplay
         desc: You did it! You unlocked the <strong>free-play mode</strong>! This means that shapes are now randomly generated! (No worries, more content is planned for the standalone!)