diff --git a/sample-3d/.gitignore b/sample-3d/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/sample-3d/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/sample-dragonbones/.gitignore b/sample-dragonbones/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/sample-dragonbones/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/sample-onscreen-controller/.gitignore b/sample-onscreen-controller/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/sample-onscreen-controller/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/sample-particles/.gitignore b/sample-particles/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/sample-particles/.gitignore
@@ -0,0 +1 @@
+/build