diff --git a/extensions/Cheddarphanie/logic.js b/extensions/Cheddarphanie/logic.js
new file mode 100644
index 0000000000..0501701364
--- /dev/null
+++ b/extensions/Cheddarphanie/logic.js
@@ -0,0 +1,141 @@
+// Name: Logic
+// ID: lemonLogic
+// Description: A pack of handy logic operators.
+// By: Cheddarphanie <https://scratch.mit.edu/users/Cheddarphanie/>
+// License: Apache-2.0
+
+(function (Scratch) {
+  "use strict";
+
+  if (!Scratch.extensions.unsandboxed) {
+    throw new Error("Logic must run unsandboxed.");
+  }
+
+  const Cast = Scratch.Cast;
+
+  class LogicExt {
+    getInfo() {
+      return {
+        id: "lemonLogic",
+        name: Scratch.translate("Logic"),
+        color1: "#59C059",
+        color2: "#50ad50",
+        color3: "#479a47",
+        blocks: [
+          /* eslint-disable extension/should-translate */
+          {
+            opcode: "Logic_NAND",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] NAND [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+          {
+            opcode: "Logic_NOR",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] NOR [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+          {
+            opcode: "Logic_XOR",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] XOR [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+          {
+            opcode: "Logic_XNOR",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] XNOR [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+          {
+            opcode: "Logic_IMPLY",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] IMPLY [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+          {
+            opcode: "Logic_NIMPLY",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[A] NIMPLY [B]",
+            arguments: {
+              A: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+              B: {
+                type: Scratch.ArgumentType.BOOLEAN,
+              },
+            },
+            extensions: ["colours_operators"],
+          },
+        ],
+      };
+    }
+
+    Logic_NAND({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return !(A && B);
+    }
+    Logic_NOR({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return !(A || B);
+    }
+    Logic_XOR({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return A !== B;
+    }
+    Logic_XNOR({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return A === B;
+    }
+    Logic_IMPLY({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return !A || B;
+    }
+    Logic_NIMPLY({ A, B }) {
+      [A, B] = [A, B].map((arg) => Cast.toBoolean(arg));
+      return A && !B;
+    }
+  }
+
+  Scratch.extensions.register(new LogicExt());
+})(Scratch);
diff --git a/extensions/extensions.json b/extensions/extensions.json
index 9027c00ac9..f33493dc42 100644
--- a/extensions/extensions.json
+++ b/extensions/extensions.json
@@ -13,6 +13,7 @@
   "local-storage",
   "true-fantom/base",
   "bitwise",
+  "Cheddarphanie/logic",
   "Skyhigh173/bigint",
   "utilities",
   "sound",