Newsletter 11: Add Guacamole (#179)

* Newsletter 11: Add Guacamole


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* Newsletter 11: Guacamole: Style tweaks

Co-authored-by: Andrey Lesnikov <ozkriff@gmail.com>

Author: BoxyUwU

content/posts/newsletter-011/guacamole.gif

@@ -65,6 +65,23 @@ If needed, a section can be split into subsections with a "------" delimiter.
 
 ## Game Updates
 
+### [Guacamole Runner][guacamole]
+
+![gif](guacamole.gif)
+
+[Guacamole Runner][guacamole] is a small game made with
+[Tetra][tetra] and [Shipyard][shipyard] in approximately 2 days
+by [@EllenNyan][ellen_twitter].
+The game's concept is that the player is constantly falling
+and must jump off planes to stay in the air.
+When they go over the top of the dirt tiles
+they plant flowers which gives them points.
+
+[guacamole]: https://github.com/EllenNyan/guacamole-runner
+[ellen_twitter]: https://twitter.com/EllenNyan0214
+[tetra]: https://github.com/17cupsofcoffee/Tetra
+[shipyard]: https://github.com/leudz/shipyard
+
 ## Learning Material Updates
 
 ## Library & Tooling Updates