diff --git a/_data/trusted.yml b/_data/trusted.yml
new file mode 100644
index 0000000..7a750a5
--- /dev/null
+++ b/_data/trusted.yml
@@ -0,0 +1,17 @@
+# This file lists the trusted mods, which have been manually reviewed
+# If you're a reviewer and you want to add one, simply add an entry under the relevant collection,
+# where the key is the mod's filename *without extension*, and the value is the date you reviewed
+# it, in YYYY-MM-DD format (don't worry about timezones).
+
+oak_mods:
+  # Empty for now
+
+oak2_mods:
+  # Empty for now
+
+willow1_mods:
+  # Empty for now
+
+willow2_mods:
+  # Empty for now
+
diff --git a/_includes/components/nav/links.html b/_includes/components/nav/links.html
index 1b2574a..2b64d3b 100644
--- a/_includes/components/nav/links.html
+++ b/_includes/components/nav/links.html
@@ -1,27 +1,34 @@
 {%- comment -%}
 This is copied from the standard links.html, as of version 0.12.0.
 
-We change it for the game selector, for each mod, we add "game-xyz" classes to its list item.
+We change it for the game selector, for each mod, we add "game-xyz" classes to its list item,
+and if it's not a trusted mod we add "untrusted" and hide it.
 {%- endcomment -%}
 
 <ul class="nav-list">
   {%- for node in include.pages -%}
   {%- if include.all == true or node.nav_exclude != true -%}
 
+  {%- assign extra_classes = "" | split: "" -%}
   {%- if site.game_selector.collection and node.collection == site.game_selector.collection -%}
-    {%- assign game_select_classes = "game-any" -%}
+    {%- assign extra_classes = extra_classes | push: "game-any" -%}
     {%- include filter_games.html page=node -%}
     {%- for game in filtered_games -%}
-      {%- assign game_class = " game-" | append: game | downcase -%}
-      {%- assign game_select_classes = game_select_classes | append: game_class -%}
+      {%- assign game_class = "game-" | append: game | downcase -%}
+      {%- assign extra_classes = extra_classes | push: game_class -%}
     {%- endfor -%}
-  {%- else -%}
-    {%- assign game_select_classes = "" -%}
+  {%- endif -%}
+  {%- assign untrusted_hidden = "" -%}
+  {%- if site.data.trusted[node.collection] -%}
+    {%- unless site.data.trusted[node.collection][node.slug] -%}
+      {%- assign extra_classes = extra_classes | push: "untrusted" -%}
+      {%- assign untrusted_hidden = "hidden" -%}
+    {%- endunless -%}
   {%- endif -%}
 
   {%- if include.ancestors contains node.title -%}
 
-    <li class="nav-list-item {{ game_select_classes }}">
+    <li class="nav-list-item {{ extra_classes | join: " " }}" {{ untrusted_hidden }}>
       <a href="{{ node.url | relative_url }}" class="nav-list-link"> ∞ </a>
     </li>
     {%- capture nav_error_report -%}
@@ -36,7 +43,7 @@
 
     {%- include components/nav/children.html node=node ancestors=include.ancestors all=include.all -%}
 
-    <li class="nav-list-item {{ game_select_classes }}">
+    <li class="nav-list-item {{ extra_classes | join: " " }}" {{ untrusted_hidden }}>
       {%- if nav_children.size >= 1 -%}
       <button class="nav-list-expander btn-reset" aria-label="{{ node.title }} submenu" aria-expanded="false">
         <svg viewBox="0 0 24 24" aria-hidden="true"><use xlink:href="#svg-arrow-right"></use></svg>
diff --git a/_includes/nav_game_selector.html b/_includes/nav_game_selector.html
index 8b62537..4506170 100644
--- a/_includes/nav_game_selector.html
+++ b/_includes/nav_game_selector.html
@@ -2,16 +2,23 @@
 Creates the game selector combo box.
 {%- endcomment -%}
 {%- if site.game_selector.collection -%}
-  <div class="nav-game-selector">
-    <select onchange="                                                {{-''-}}
-        h=(t,v)=>document.querySelectorAll(t).forEach(x=>x.hidden=v); {{-''-}}
-        h('.game-any',1);                                             {{-''-}}
-        h(event.target.value,0);                                      {{-''-}}
-      ">
+  <div class="nav-mod-filter">
+    <select id="nav-game-select" onchange="nav_mod_filter()">
       <option selected value=".game-any">All Games</option>
       {%- for game in site.game_selector.games -%}
         <option value=".game-{{ game | downcase }}">{{ game }}</option>
       {%- endfor -%}
     </select>
+    <input id="nav-trusted-check"type="checkbox" checked onchange="nav_mod_filter()"/>
+    {%- comment -%}(strip whitespace){%- endcomment -%}
+    <label for="nav-trusted-check">Only Show Trusted</label>
+    <script>
+      function nav_mod_filter(){                                                            {{-""-}}
+        const i=x=>document.getElementById(x);                                              {{-""-}}
+        const h=(t,v)=>document.querySelectorAll(t).forEach(x=>x.hidden=v);                 {{-""-}}
+        h('.game-any',1);                                                                   {{-""-}}
+        h(i`nav-game-select`.value+(i`nav-trusted-check`.checked?":not(.untrusted)":""),0); {{-""-}}
+      }                                                                                     {{-""-}}
+    </script>
   </div>
 {%- endif -%}
diff --git a/_layouts/mod.html b/_layouts/mod.html
index e2be452..5d3d9e9 100644
--- a/_layouts/mod.html
+++ b/_layouts/mod.html
@@ -75,6 +75,14 @@ <h1 id="title">{{ page.title }}</h1>
         {%- endif -%}
     </dd>
 
+    {%- assign trusted = site.data.trusted[page.collection][page.slug] -%}
+    {%- if trusted -%}
+    <dt>Last Review</dt>
+    <dd>
+        {{- trusted | date: "%Y-%m-%d" -}}
+    </dd>
+    {%- endif -%}
+
     {%- assign dependencies = page.dependencies | default: page.pyproject.project.dependencies -%}
     {%- if dependencies.size > 0 -%}
         <dt class="requirement">Requires</dt>
diff --git a/_sass/custom/custom.scss b/_sass/custom/custom.scss
index 559a206..5391f35 100644
--- a/_sass/custom/custom.scss
+++ b/_sass/custom/custom.scss
@@ -13,7 +13,7 @@ div.video-16-9 {
 
 dl.mod-desc {
     // Make the description list header shorter
-    grid-template-columns: 5em 1fr;
+    grid-template-columns: 6em 1fr;
 
     // Make coop support expand into a description on hover
     dd.coop {
@@ -107,19 +107,51 @@ span.mod-update-notification {
     }
 }
 
-// Make the game selector have the same sort of padding as other nav items
-div.nav-game-selector {
+div.nav-mod-filter {
+    // Make the filter have the same sort of padding as other nav items
     padding: $sp-2 $nav-list-item-height-sm $sp-1 $gutter-spacing-sm;
-    @include fs-5;
-
     @include mq(md) {
         padding-right: $nav-list-item-height;
         padding-left: $gutter-spacing;
-        @include fs-3;
     }
 
     >select {
-        // And make the actual box full width
+        // Make the game selector box full width
         width: 100%;
+
+        // And mess with its font size
+        @include fs-5;
+        @include mq(md) {
+            @include fs-3;
+        }
     }
+
+    // Add some padding to the trusted checkbox. This is not quite the same as other items.
+    >input[type=checkbox] {
+        min-height: 0;
+        margin-top: $sp-2;
+
+        &+label {
+            padding-left: $sp-2;
+
+            // Also mess with its font size, but a little differently
+            @include fs-4;
+            @include mq(md) {
+                @include fs-3;
+            }
+        }
+    }
+
 }
+
+// Grey out untrusted mods a little
+.nav-list .nav-list-item.untrusted .nav-list-link {
+    & {
+        color: darken($link-color, 15%);
+    }
+    &:hover, &.active {
+        // Normal hover is 5% darker already
+        color: darken($link-color, 20%);
+    }
+}
+