diff --git a/index.html b/index.html
index 084d96d..5e1d20b 100644
--- a/index.html
+++ b/index.html
@@ -708,7 +708,12 @@
                         <h3 class="config-legend">Detail</h3>
                         <div class="form-grid">
                             <div class="form-group">
-                                <label class="form-group-label">Island Model Quality</label>
+                                <label class="form-group-label">
+                                    Island Model Quality
+                                    <span class="tooltip-trigger">?
+                                        <span class="tooltip-content">Note: using the "Low" setting will cause the island to disappear. This is not a bug, but the same behavior as present in the original game.</span>
+                                    </span>
+                                </label>
                                 <div class="radio-group option-list">
                                     <div class="option-item">
                                         <input type="radio" id="gfx-low" name="Island Quality" value="0">