diff --git a/extra/balloon-bomber/tags.txt b/extra/balloon-bomber/tags.txt
index 4717ffd987..dfed6b33f2 100644
--- a/extra/balloon-bomber/tags.txt
+++ b/extra/balloon-bomber/tags.txt
@@ -1,2 +1,3 @@
+demos
 games
 applications
diff --git a/extra/space-invaders/tags.txt b/extra/space-invaders/tags.txt
index 4717ffd987..dfed6b33f2 100644
--- a/extra/space-invaders/tags.txt
+++ b/extra/space-invaders/tags.txt
@@ -1,2 +1,3 @@
+demos
 games
 applications
diff --git a/extra/tetris/tags.txt b/extra/tetris/tags.txt
index 8ae5957a4b..09934571b3 100644
--- a/extra/tetris/tags.txt
+++ b/extra/tetris/tags.txt
@@ -1,2 +1,3 @@
+demos
 applications
 games