Update index.md with Theta Wave

content/posts/newsletter-018/index.md

@@ -343,6 +343,23 @@ primarily by simply writing YAML configuration files and integrating with
 [bevy]: https://bevyengine.org
 [ldtk]: https://ldtk.io
 
+### Theta Wave
+
+ [![Homing Missiles](theta_wave_homing_missiles.gif)][homing-missiles]
+ _Homing missiles pursue the closest player entity_
+
+ A real name was finally chosen for space_shooter_rs! [Theta Wave] is a space
+ shooter game by developers [@micah_tigley] and [@carlosupina]. It is one of
+ the showcase games for the [Amethyst Engine] In the past month they have
+ been focused on improving the motion system for the game. The improvements
+ allowed them to begin adding more interesting behavior to entities. Missiles
+ were changed to home to the player.
+
+[Theta Wave]: https://github.com/amethyst/theta-wave
+[@micah_tigley]: https://twitter.com/micah_tigley
+[@carlosupina]: https://twitter.com/carlosupina
+[Amethyst Engine]: https://amethyst.rs/
+
 ## Learning Material Updates
 
 ## Engine Updates