diff --git a/frontend/src/ts/test/funbox/funbox-functions.ts b/frontend/src/ts/test/funbox/funbox-functions.ts
index 4810b36fbc74..200720604cc0 100644
--- a/frontend/src/ts/test/funbox/funbox-functions.ts
+++ b/frontend/src/ts/test/funbox/funbox-functions.ts
@@ -318,18 +318,32 @@ const list: Partial<Record<FunboxName, FunboxFunctions>> = {
   },
   rAnDoMcAsE: {
     alterText(word: string): string {
-      let randomcaseword = word[0] as string;
-      for (let i = 1; i < word.length; i++) {
-        if (
-          randomcaseword[i - 1] ===
-          (randomcaseword[i - 1] as string).toUpperCase()
-        ) {
-          randomcaseword += (word[i] as string).toLowerCase();
+      let randomCaseWord = "";
+
+      for (let letter of word) {
+        if (Math.random() < 0.5) {
+          randomCaseWord += letter.toUpperCase();
         } else {
-          randomcaseword += (word[i] as string).toUpperCase();
+          randomCaseWord += letter.toLowerCase();
         }
       }
-      return randomcaseword;
+
+      return randomCaseWord;
+    },
+  },
+  sPoNgEcAsE: {
+    alterText(word: string): string {
+      let spongeCaseWord = "";
+
+      for (let i = 0; i < word.length; i++) {
+        if (i % 2 === 0) {
+          spongeCaseWord += word[i]?.toLowerCase();
+        } else {
+          spongeCaseWord += word[i]?.toUpperCase();
+        }
+      }
+
+      return spongeCaseWord;
     },
   },
   rot13: {
diff --git a/frontend/static/challenges/_list.json b/frontend/static/challenges/_list.json
index 73564f3036f9..69d487158ea0 100644
--- a/frontend/static/challenges/_list.json
+++ b/frontend/static/challenges/_list.json
@@ -613,11 +613,11 @@
     }
   },
   {
-    "name": "iKiNdAlIkEhOwInEfFiCiEnTqWeRtYiS",
-    "display": "I kInDa LiKe HoW iNeFfIcIeNt QwErTy Is",
+    "name": "iKINdaLikEHoWinEFFICIeNtQwErtYIs.",
+    "display": "i KINda LikE HoW inEFFICIeNt QwErtY Is.",
     "autoRole": true,
     "type": "funbox",
-    "parameters": [["rAnDoMcAsE"], "time", 3600],
+    "parameters": [["sPoNgEcAsE"], "time", 3600],
     "requirements": {
       "wpm": {
         "min": 100
@@ -626,7 +626,7 @@
         "min": 60
       },
       "funbox": {
-        "exact": ["rAnDoMcAsE"]
+        "exact": ["sPoNgEcAsE"]
       }
     }
   },
diff --git a/packages/funbox/src/list.ts b/packages/funbox/src/list.ts
index bae05e7f6f77..f43ab93e8c80 100644
--- a/packages/funbox/src/list.ts
+++ b/packages/funbox/src/list.ts
@@ -114,13 +114,21 @@ const list: Record<FunboxName, FunboxMetadata> = {
     name: "arrows",
   },
   rAnDoMcAsE: {
-    description: "I kInDa LiKe HoW iNeFfIcIeNt QwErTy Is.",
+    description: "raNdomIze ThE CApitaLizatIon Of EveRY LeTtEr.",
     canGetPb: false,
     difficultyLevel: 2,
     properties: ["changesCapitalisation"],
     frontendFunctions: ["alterText"],
     name: "rAnDoMcAsE",
   },
+  sPoNgEcAsE: {
+    description: "I kInDa LiKe HoW iNeFfIcIeNt QwErTy Is.",
+    canGetPb: false,
+    difficultyLevel: 2,
+    properties: ["changesCapitalisation"],
+    frontendFunctions: ["alterText"],
+    name: "sPoNgEcAsE",
+  },
   capitals: {
     description: "Capitalize Every Word.",
     canGetPb: false,
diff --git a/packages/schemas/src/configs.ts b/packages/schemas/src/configs.ts
index edfd6af29355..8cb6325887cc 100644
--- a/packages/schemas/src/configs.ts
+++ b/packages/schemas/src/configs.ts
@@ -279,6 +279,7 @@ export const FunboxNameSchema = z.enum([
   "choo_choo",
   "arrows",
   "rAnDoMcAsE",
+  "sPoNgEcAsE",
   "capitals",
   "layout_mirror",
   "layoutfluid",