added some projects to the entt-in-action list

README.md

@@ -2761,9 +2761,17 @@ projects based on EnTT and did not hold back when it came to documenting them.
 
 Below an incomplete list of projects and articles:
 
-* [Minecraft](https://minecraft.net/en-us/attribution/): of course, **that** Minecraft, by Mojang (see the open source attributions page).
+* [Minecraft](https://minecraft.net/en-us/attribution/): of course, **that**
+  Minecraft, by Mojang (see the open source attributions page).
 * [Face Smash](https://play.google.com/store/apps/details?id=com.gamee.facesmash):
   the emojis dominate the world, destroy them all with your facial expressions.
+* [shiva](https://github.com/Milerius/shiva): modern C++ Engine with modularity.
+* [Classic Tower Defence](https://github.com/kerndog73/Classic-Tower-Defence):
+  a tiny little tower defence game featuring a homemade font.
+  [Check it out](https://indi-kernick.itch.io/classic-tower-defence).
+* [The Machine](https://github.com/Kerndog73/The-Machine): a box pushing puzzler
+  with logic gates and other cool stuff.
+  [Check it out](https://indi-kernick.itch.io/the-machine-web-version).
 * [EnttPong](https://github.com/reworks/EnttPong): example game with `EnTT`.
 * [Space Battle: Huge edition](http://victor.madtriangles.com/code%20experiment/2018/06/11/post-ecs-battle-huge.html):
   huge space battle built entirely from scratch.