diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..3e63b8d
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,6 @@
+{
+  "printWidth": 80,
+  "quoteProps": "consistent",
+  "semi": false,
+  "singleQuote": true
+}
diff --git a/Makefile b/Makefile
index e2a221e..fc364e6 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,9 @@ build_dir := ./build
 
 tic_cmd := tic80 --skip --fs './'
 
+prettier:
+	npx prettier --write ${game_src}
+
 run:
 	${tic_cmd} ${game_src}