diff --git a/descriptions/Engine.Flax.md b/descriptions/Engine.Flax.md
new file mode 100644
index 000000000..ae6721e71
--- /dev/null
+++ b/descriptions/Engine.Flax.md
@@ -0,0 +1 @@
+[**Flax Engine**](https://flaxengine.com/) is an [**open source**](https://github.com/FlaxEngine/FlaxEngine) 3D engine with realistic scene rendering.
diff --git a/rules.ini b/rules.ini
index 71aab47dc..806d2ce3e 100644
--- a/rules.ini
+++ b/rules.ini
@@ -86,6 +86,7 @@ FalcoEngine = (?:^|/)FalcoEngine\.dll$
 Fase = ^faseEngine\.dll$
 FBN = (?:^|/)fbnEngine\.dll$
 FlatRedBall = (?:^|/)FlatRedBall\.
+Flax = (?:^|/)FlaxEngine\.dll$
 Flexi = (?:^|/)fx_core\.dll$
 FNA = (?:^|/)fna\.dll$
 FPS_Creator = (?:^|/)Files/languagebank/english/textfiles/fpsc-050\.ini$
diff --git a/tests/Engine.Flax.txt b/tests/Engine.Flax.txt
new file mode 100644
index 000000000..b5678a62c
--- /dev/null
+++ b/tests/Engine.Flax.txt
@@ -0,0 +1,2 @@
+FlaxEngine.dll
+/FlaxEngine.dll
diff --git a/tests/types/_NonMatchingTests.txt b/tests/types/_NonMatchingTests.txt
index b60344447..094ac818e 100644
--- a/tests/types/_NonMatchingTests.txt
+++ b/tests/types/_NonMatchingTests.txt
@@ -950,6 +950,7 @@ sub/dir/notactuallyemotedriver.dll
 sub/dir/emotedriver.dllwhoops
 LICENSExelectronxtxt
 scummvmxexe
+flax.dll
 packs/sli_spk
 sli.spk
 packs/sli