diff --git a/public/scripts/extensions/regex/editor.html b/public/scripts/extensions/regex/editor.html
index 3c3f65aae..96d3238cf 100644
--- a/public/scripts/extensions/regex/editor.html
+++ b/public/scripts/extensions/regex/editor.html
@@ -76,7 +76,7 @@
         </div>
 
         <div class="flex-container">
-            <div class="wi-enter-footer-text flex-container flexFlowColumn flexNoGap alignitemsstart">
+            <div class="flex1 wi-enter-footer-text flex-container flexFlowColumn flexNoGap alignitemsstart">
                 <small>Affects</small>
                 <div>
                     <label class="checkbox flex-container">
@@ -97,7 +97,7 @@
                     </label>
                 </div>
             </div>
-            <div class="wi-enter-footer-text flex-container flexFlowColumn flexNoGap alignitemsstart">
+            <div class="flex1 wi-enter-footer-text flex-container flexFlowColumn flexNoGap alignitemsstart">
                 <small>Other Options</small>
                 <label class="checkbox flex-container">
                     <input type="checkbox" name="disabled" />
@@ -120,13 +120,6 @@
                     <span data-i18n="Substitute Regex">Substitute Regex (?)</span>
                 </label>
             </div>
-            <div class="flex-container flexFlowColumn alignitemsstart">
-                <small>Replacement Strategy</small>
-                <select name="replace_strategy_select" class="margin0">
-                    <option value="0">Replace</option>
-                    <option value="1">Overlay (currently broken)</option>
-                </select>
-            </div>
         </div>
     </div>
 </div>
diff --git a/public/scripts/extensions/regex/engine.js b/public/scripts/extensions/regex/engine.js
index 358fc15ae..38a10cb0f 100644
--- a/public/scripts/extensions/regex/engine.js
+++ b/public/scripts/extensions/regex/engine.js
@@ -19,14 +19,6 @@ const regex_placement = {
     SLASH_COMMAND: 3,
 };
 
-/**
- * @enum {number} How the regex script should replace the matched string
- */
-const regex_replace_strategy = {
-    REPLACE: 0,
-    OVERLAY: 1,
-};
-
 /**
  * Instantiates a regular expression from a string.
  * @param {string} input The input string.
@@ -153,86 +145,3 @@ function filterString(rawString, trimStrings, { characterOverride } = {}) {
 
     return finalString;
 }
-
-/**
- * Substitutes regex-specific and normal parameters
- * @param {string} rawString
- * @param {string} regexMatch
- * @param {RegexSubstituteParams} params The parameters to use for the regex substitution
- * @returns {string} The substituted string
- * @typedef {{characterOverride?: string, replaceStrategy?: number}} RegexSubstituteParams The parameters to use for the regex substitution
- */
-function substituteRegexParams(rawString, regexMatch, { characterOverride, replaceStrategy } = {}) {
-    let finalString = rawString;
-    finalString = substituteParams(finalString, undefined, characterOverride);
-
-    let overlaidMatch = regexMatch;
-    // TODO: Maybe move the for loops into a separate function?
-    if (replaceStrategy === regex_replace_strategy.OVERLAY) {
-        const splitReplace = finalString.split('{{match}}');
-
-        // There's a prefix
-        if (splitReplace[0]) {
-            // Fetch the prefix
-            const splicedPrefix = spliceSymbols(splitReplace[0], false);
-
-            // Sequentially remove all occurrences of prefix from start of split
-            const splitMatch = overlaidMatch.split(splicedPrefix);
-            let sliceNum = 0;
-            for (let index = 0; index < splitMatch.length; index++) {
-                if (splitMatch[index].length === 0) {
-                    sliceNum++;
-                } else {
-                    break;
-                }
-            }
-
-            overlaidMatch = splitMatch.slice(sliceNum, splitMatch.length).join(splicedPrefix);
-        }
-
-        // There's a suffix
-        if (splitReplace[1]) {
-            // Fetch the suffix
-            const splicedSuffix = spliceSymbols(splitReplace[1], true);
-
-            // Sequential removal of all suffix occurrences from end of split
-            const splitMatch = overlaidMatch.split(splicedSuffix);
-            let sliceNum = 0;
-            for (let index = splitMatch.length - 1; index >= 0; index--) {
-                if (splitMatch[index].length === 0) {
-                    sliceNum++;
-                } else {
-                    break;
-                }
-            }
-
-            overlaidMatch = splitMatch.slice(0, splitMatch.length - sliceNum).join(splicedSuffix);
-        }
-    }
-
-    // Only one match is replaced. This is by design
-    finalString = finalString.replace('{{match}}', overlaidMatch) || finalString.replace('{{match}}', regexMatch);
-
-    return finalString;
-}
-
-/**
- * Splices common sentence symbols and whitespace from the beginning and end of a string.
- * Using a for loop due to sequential ordering.
- * @param {string} rawString The raw string to splice
- * @param {boolean} isSuffix String is a suffix
- * @returns {string} The spliced string
- */
-function spliceSymbols(rawString, isSuffix) {
-    let offset = 0;
-
-    for (const ch of isSuffix ? rawString.split('').reverse() : rawString) {
-        if (ch.match(/[^\w.,?'!]/)) {
-            offset++;
-        } else {
-            break;
-        }
-    }
-
-    return isSuffix ? rawString.substring(0, rawString.length - offset) : rawString.substring(offset);
-}
diff --git a/public/scripts/extensions/regex/index.js b/public/scripts/extensions/regex/index.js
index c5fabdac8..97617bcfe 100644
--- a/public/scripts/extensions/regex/index.js
+++ b/public/scripts/extensions/regex/index.js
@@ -141,9 +141,6 @@ async function onRegexEditorOpenClick(existingId) {
             editorHtml
                 .find('input[name="substitute_regex"]')
                 .prop('checked', existingScript.substituteRegex ?? false);
-            editorHtml
-                .find('select[name="replace_strategy_select"]')
-                .val(existingScript.replaceStrategy ?? 0);
 
             existingScript.placement.forEach((element) => {
                 editorHtml
@@ -181,7 +178,6 @@ async function onRegexEditorOpenClick(existingId) {
             replaceString: editorHtml.find('.regex_replace_string').val(),
             trimStrings: String(editorHtml.find('.regex_trim_strings').val()).split('\n').filter((e) => e.length !== 0) || [],
             substituteRegex: editorHtml.find('input[name="substitute_regex"]').prop('checked'),
-            replaceStrategy: Number(editorHtml.find('select[name="replace_strategy_select"]').find(':selected').val()) ?? 0,
         };
         const rawTestString = String(editorHtml.find('#regex_test_input').val());
         const result = runRegexScript(testScript, rawTestString);
@@ -224,11 +220,6 @@ async function onRegexEditorOpenClick(existingId) {
                 editorHtml
                     .find('input[name="substitute_regex"]')
                     .prop('checked'),
-            replaceStrategy:
-                parseInt(editorHtml
-                    .find('select[name="replace_strategy_select"]')
-                    .find(':selected')
-                    .val()) ?? 0,
         };
 
         saveRegexScript(newRegexScript, existingScriptIndex);