diff --git a/descriptions/Engine.GIANTS.md b/descriptions/Engine.GIANTS.md
new file mode 100644
index 000000000..9c9724ed3
--- /dev/null
+++ b/descriptions/Engine.GIANTS.md
@@ -0,0 +1 @@
+[**GIANTS Software's**](https://giants-software.com/index.php) [**GIANTS engine**](https://gdn.giants-software.com/) runs the Farming Simulator games.
diff --git a/rules.ini b/rules.ini
index 57e63f556..0980bb4d3 100644
--- a/rules.ini
+++ b/rules.ini
@@ -92,6 +92,7 @@ GameMaker[] = (?:^|/)gmsched\.dll$
 GDevelop[] = (?:^|/)LICENSE\.GDevelop\.txt$
 GDevelop[] = (?:^|/)gdjs-evtsext__
 GDevelop[] = (?:^|/)GDCpp\.dll$
+GIANTS = \.i3d$
 Gideros = gideros
 Glacier = \.rpkg$
 GlyphX = ^ClientLauncherG(?:64)?\.exe$
diff --git a/tests/types/Engine.GIANTS.txt b/tests/types/Engine.GIANTS.txt
new file mode 100644
index 000000000..9a4956646
--- /dev/null
+++ b/tests/types/Engine.GIANTS.txt
@@ -0,0 +1 @@
+.i3d