diff --git a/examples/tetris/screenshot.png b/examples/tetris/screenshot.png
index c6c908d8a2..67013c1011 100644
Binary files a/examples/tetris/screenshot.png and b/examples/tetris/screenshot.png differ
diff --git a/vlib/os/os.v b/vlib/os/os.v
index 8d644e20b8..318747c0a3 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -404,7 +404,7 @@ pub fn unsetenv(name string) int {
 	} 
 }
 
-// `file_exists` returns true if `path` exists.
+// file_exists returns true if `path` exists.
 pub fn file_exists(_path string) bool {
 	$if windows {
 		path := _path.replace('/', '\\')
@@ -414,44 +414,6 @@ pub fn file_exists(_path string) bool {
 	}
 }
 
-pub fn dir_exists(path string) bool {
-	$if windows {
-		_path := path.replace('/', '\\')
-		attr := int(C.GetFileAttributes(_path.to_wide()))
-		if attr == C.INVALID_FILE_ATTRIBUTES {
-			return false
-		}
-		if (attr & C.FILE_ATTRIBUTE_DIRECTORY) != 0 {
-			return true
-		}
-		return false
-	} 
-	$else { 
-		dir := C.opendir(path.str)
-		res := !isnil(dir)
-		if res {
-			C.closedir(dir)
-		}
-		return res
-	} 
-}
-
-// mkdir creates a new directory with the specified path.
-pub fn mkdir(path string) {
-	$if windows {
-		_path := path.replace('/', '\\')
-		// Windows doesnt recursively create the folders
-		// so we need to help it out here
-		if _path.last_index('\\') != -1 {
-			mkdir(_path.all_before_last('\\'))
-		}
-		C.CreateDirectory(_path.to_wide(), 0)
-	}
-	$else {
-		C.mkdir(path.str, 511)// S_IRWXU | S_IRWXG | S_IRWXO
-	}
-}
-
 // rm removes file in `path`.
 pub fn rm(path string) {
 	$if windows {
@@ -766,33 +728,6 @@ pub fn getwd() string {
 	}
 }
 
-// win: FILETIME
-// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-filetime
-struct filetime {
-  dwLowDateTime u32
-  dwHighDateTime u32
-}
-
-// win: WIN32_FIND_DATA
-// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-_win32_find_dataw
-struct win32finddata {
-mut:
-    dwFileAttributes u32
-    ftCreationTime filetime
-  	ftLastAccessTime filetime
-  	ftLastWriteTime filetime
-	nFileSizeHigh u32
-	nFileSizeLow u32
-	dwReserved0 u32
-	dwReserved1 u32
-	cFileName [260]u16 // MAX_PATH = 260 
-	cAlternateFileName [14]u16 // 14
-  	dwFileType u32
-  	dwCreatorType u32
-  	wFinderFlags u16
-}
-
-
 // walk_ext returns a recursive list of all file paths ending with `ext`. 
 pub fn walk_ext(path, ext string) []string {
 	if !os.is_dir(path) { 
diff --git a/vlib/os/os_nix.v b/vlib/os/os_nix.v
index 6eac20da2b..3a18382d4e 100644
--- a/vlib/os/os_nix.v
+++ b/vlib/os/os_nix.v
@@ -39,3 +39,19 @@ pub fn ls(path string) []string {
 	C.closedir(dir)
 	return res
 }
+
+pub fn dir_exists(path string) bool {
+	dir := C.opendir(path.str)
+	res := !isnil(dir)
+	if res {
+		C.closedir(dir)
+	}
+	return res
+}
+
+// mkdir creates a new directory with the specified path.
+pub fn mkdir(path string) {
+	C.mkdir(path.str, 511)// S_IRWXU | S_IRWXG | S_IRWXO
+}
+
+
diff --git a/vlib/os/os_win.v b/vlib/os/os_win.v
index 6a8c03f5d3..042711217f 100644
--- a/vlib/os/os_win.v
+++ b/vlib/os/os_win.v
@@ -11,6 +11,34 @@ const (
 // A handle to an object.
 type HANDLE voidptr
 
+// win: FILETIME
+// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-filetime
+struct filetime {
+  dwLowDateTime u32
+  dwHighDateTime u32
+}
+
+// win: WIN32_FIND_DATA
+// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-_win32_find_dataw
+struct win32finddata {
+mut:
+    dwFileAttributes u32
+    ftCreationTime filetime
+  	ftLastAccessTime filetime
+  	ftLastWriteTime filetime
+	nFileSizeHigh u32
+	nFileSizeLow u32
+	dwReserved0 u32
+	dwReserved1 u32
+	cFileName [260]u16 // MAX_PATH = 260 
+	cAlternateFileName [14]u16 // 14
+  	dwFileType u32
+  	dwCreatorType u32
+  	wFinderFlags u16
+}
+
+
+
 pub fn ls(path string) []string {
 	mut find_file_data := win32finddata{}
 	mut dir_files := []string
@@ -44,6 +72,29 @@ pub fn ls(path string) []string {
 	return dir_files
 } 
 
+pub fn dir_exists(path string) bool {
+	_path := path.replace('/', '\\')
+	attr := int(C.GetFileAttributes(_path.to_wide()))
+	if attr == C.INVALID_FILE_ATTRIBUTES {
+		return false
+	}
+	if (attr & C.FILE_ATTRIBUTE_DIRECTORY) != 0 {
+		return true
+	}
+	return false
+} 
+
+// mkdir creates a new directory with the specified path.
+pub fn mkdir(path string) {
+	_path := path.replace('/', '\\')
+	// Windows doesnt recursively create the folders
+	// so we need to help it out here
+	if _path.last_index('\\') != -1 {
+		mkdir(_path.all_before_last('\\'))
+	}
+	C.CreateDirectory(_path.to_wide(), 0)
+} 
+
 // Ref - https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=vs-2019
 // get_file_handle retrieves the operating-system file handle that is associated with the specified file descriptor.
 pub fn get_file_handle(path string) HANDLE {