diff --git a/res_raw/sprites/blueprints/stacker-mirrored.png b/res_raw/sprites/blueprints/stacker-mirrored.png
new file mode 100755
index 00000000..f01777b4
Binary files /dev/null and b/res_raw/sprites/blueprints/stacker-mirrored.png differ
diff --git a/res_raw/sprites/buildings/stacker-mirrored.png b/res_raw/sprites/buildings/stacker-mirrored.png
new file mode 100755
index 00000000..2240c20e
Binary files /dev/null and b/res_raw/sprites/buildings/stacker-mirrored.png differ
diff --git a/src/css/resources.scss b/src/css/resources.scss
index 08bfa43f..1fd6df20 100644
--- a/src/css/resources.scss
+++ b/src/css/resources.scss
@@ -1,5 +1,5 @@
-$buildings: belt, cutter, miner, mixer, painter, rotater, balancer, stacker, trash, underground_belt, wire,
-    constant_signal, logic_gate, lever, filter, wire_tunnel, display, virtual_processor, reader, storage,
+$buildings: belt, cutter, miner, mixer, painter, rotater, balancer, stacker, stacker-mirrored, trash, underground_belt,
+    wire, constant_signal, logic_gate, lever, filter, wire_tunnel, display, virtual_processor, reader, storage,
     transistor, analyzer, comparator, item_producer;
 
 @each $building in $buildings {
@@ -9,8 +9,8 @@ $buildings: belt, cutter, miner, mixer, painter, rotater, balancer, stacker, tra
     }
 }
 
-$buildingsAndVariants: belt, balancer, underground_belt, underground_belt-tier2, miner, miner-chainable,
-    cutter, cutter-quad, rotater, rotater-ccw, stacker, mixer, painter-double, painter-quad, trash, storage,
+$buildingsAndVariants: belt, balancer, underground_belt, underground_belt-tier2, miner, miner-chainable, cutter,
+    cutter-quad, rotater, rotater-ccw, stacker, stacker-mirrored, mixer, painter-double, painter-quad, trash, storage,
     reader, rotater-rotate180, display, constant_signal, wire, wire_tunnel, logic_gate-or, logic_gate-not,
     logic_gate-xor, analyzer, virtual_processor-rotater, virtual_processor-unstacker, item_producer,
     virtual_processor-stacker, virtual_processor-painter, wire-second, painter, painter-mirrored, comparator;
diff --git a/src/js/game/buildings/stacker.js b/src/js/game/buildings/stacker.js
index 40a9c5ae..5bd7f66c 100644
--- a/src/js/game/buildings/stacker.js
+++ b/src/js/game/buildings/stacker.js
@@ -5,10 +5,13 @@ import { ItemAcceptorComponent } from "../components/item_acceptor";
 import { ItemEjectorComponent } from "../components/item_ejector";
 import { enumItemProcessorTypes, ItemProcessorComponent } from "../components/item_processor";
 import { Entity } from "../entity";
-import { MetaBuilding } from "../meta_building";
+import { defaultBuildingVariant, MetaBuilding } from "../meta_building";
 import { GameRoot } from "../root";
 import { enumHubGoalRewards } from "../tutorial_goals";
 
+/** @enum {string} */
+export const enumStackerVariants = { mirrored: "mirrored" };
+
 export class MetaStackerBuilding extends MetaBuilding {
     constructor() {
         super("stacker");
@@ -32,6 +35,14 @@ export class MetaStackerBuilding extends MetaBuilding {
         return [[T.ingame.buildingPlacement.infoTexts.speed, formatItemsPerSecond(speed)]];
     }
 
+    /**
+     * @param {GameRoot} root
+     */
+    getAvailableVariants(root) {
+        let variants = [defaultBuildingVariant, enumStackerVariants.mirrored];
+        return variants;
+    }
+
     /**
      * @param {GameRoot} root
      */
@@ -56,6 +67,7 @@ export class MetaStackerBuilding extends MetaBuilding {
                 slots: [{ pos: new Vector(0, 0), direction: enumDirection.top }],
             })
         );
+
         entity.addComponent(
             new ItemAcceptorComponent({
                 slots: [
@@ -73,4 +85,27 @@ export class MetaStackerBuilding extends MetaBuilding {
             })
         );
     }
+    /**
+     *
+     * @param {Entity} entity
+     * @param {number} rotationVariant
+     * @param {string} variant
+     */
+    updateVariants(entity, rotationVariant, variant) {
+        let inv = variant === defaultBuildingVariant ? 0 : 1;
+        entity.components.ItemAcceptor.setSlots([
+            {
+                pos: new Vector(inv, 0),
+                directions: [enumDirection.bottom],
+                filter: "shape",
+            },
+            {
+                pos: new Vector(1 - inv, 0),
+                directions: [enumDirection.bottom],
+                filter: "shape",
+            },
+        ]);
+        entity.components.ItemEjector.setSlots([{ pos: new Vector(inv, 0), direction: enumDirection.top }])
+    }
 }
+
diff --git a/src/js/game/meta_building_registry.js b/src/js/game/meta_building_registry.js
index 0613103e..370608ef 100644
--- a/src/js/game/meta_building_registry.js
+++ b/src/js/game/meta_building_registry.js
@@ -18,7 +18,7 @@ import { MetaMixerBuilding } from "./buildings/mixer";
 import { enumPainterVariants, MetaPainterBuilding } from "./buildings/painter";
 import { MetaReaderBuilding } from "./buildings/reader";
 import { enumRotaterVariants, MetaRotaterBuilding } from "./buildings/rotater";
-import { MetaStackerBuilding } from "./buildings/stacker";
+import { enumStackerVariants, MetaStackerBuilding } from "./buildings/stacker";
 import { MetaStorageBuilding } from "./buildings/storage";
 import { enumTransistorVariants, MetaTransistorBuilding } from "./buildings/transistor";
 import { MetaTrashBuilding } from "./buildings/trash";
@@ -87,6 +87,7 @@ export function initMetaBuildingRegistry() {
 
     // Stacker
     registerBuildingVariant(14, MetaStackerBuilding);
+    registerBuildingVariant(62, MetaStackerBuilding, enumStackerVariants.mirrored);
 
     // Mixer
     registerBuildingVariant(15, MetaMixerBuilding);
diff --git a/translations/base-en.yaml b/translations/base-en.yaml
index 86bc8c90..a56ae512 100644
--- a/translations/base-en.yaml
+++ b/translations/base-en.yaml
@@ -565,6 +565,10 @@ buildings:
             name: &stacker Stacker
             description: Combines its inputs, on the same layer if possible, otherwise the right input is stacked on top of the left input.
 
+        mirrored:
+            name: *stacker
+            description: test
+
     mixer:
         default:
             name: &mixer Color Mixer