diff --git a/www/index.html b/www/index.html
index 69fdaca..c36bced 100644
--- a/www/index.html
+++ b/www/index.html
@@ -87,12 +87,20 @@ make test-all</code></pre>
 <p>AGPL-3.0-only. Public domain for whitepapers, proofs, and disclosures through <a href="https://undefect.com">undefect.com</a>. Companion to <a href="https://unturf.com">unturf.com</a>&rsquo;s permacomputer project.</p>
 </section>
 
+<section id="playground">
+<h2>Try it in your browser</h2>
+<p>All three tiers compiled to WebAssembly &mdash; Python (Pyodide hosting <code>lumbda.py</code>), C (Emscripten), and a hand-written WAT parallel to <code>asm/lumbda.s</code>. Pick a demo, pick a tier (or run all three side by side), and watch the same Lisp source evaluate three different ways.</p>
+<p><a class="cta" href="playground/">Open the playground &rarr;</a></p>
+</section>
+
 </main>
 
 <footer>
   <p>
     <a href="https://git.unturf.com/engineering/unturf/lumbda">source</a>
     &middot;
+    <a href="playground/">playground</a>
+    &middot;
     <a href="lumbda-whitepaper.html">whitepaper (HTML)</a>
     &middot;
     <a href="lumbda-whitepaper.pdf">whitepaper (PDF)</a>