diff --git a/css/brands-extended.css b/css/brands-extended.css
index aa1d765..d146299 100644
--- a/css/brands-extended.css
+++ b/css/brands-extended.css
@@ -112,6 +112,16 @@ button:hover,
 .button.button-microblog:focus {
   filter: brightness(90%) }
 
+  /* osu! */
+.button.button-osu {
+  color: #ffffff;
+  background-color: #ff8ee6;
+}
+.button.button-osu:hover,
+.button.button-osu:focus {
+  filter: brightness(90%);
+}
+
 /* SpaceHey */
 .button.button-spacehey {
   color: #FFFFFF;
diff --git a/images/icons-extended/osu.svg b/images/icons-extended/osu.svg
new file mode 100644
index 0000000..07c5fd4
--- /dev/null
+++ b/images/icons-extended/osu.svg
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/preview.html b/preview.html
index e9c1c9b..2981a7d 100644
--- a/preview.html
+++ b/preview.html
@@ -112,6 +112,11 @@
             <img class="icon" src="images/icons-extended/microblog.svg" alt="MicroBlog Logo">MicroBlog</a>
         <br>
 
+        <!-- osu! -->
+        <a class="button button-osu" href="#" target="_blank" rel="noopener">
+          <img class="icon" src="images/icons/osu.svg" alt="osu! Logo">osu!</a>
+      <br>
+
         <!-- SpaceHey -->
         <a class="button button-spacehey" href="#" target="_blank" rel="noopener">
             <img class="icon" src="images/icons-extended/spacehey.svg" alt="SpaceHey Logo">SpaceHey</a>