diff --git a/helpers.gd b/helpers.gd
index a304a5b..d5d9a27 100644
--- a/helpers.gd
+++ b/helpers.gd
@@ -66,3 +66,20 @@ func parse_args():
 			else:
 				arguments[argument.lstrip("--")] = true
 	return arguments
+	
+func careful_delete(path_inside):
+	var expected_prefix
+	
+	var os = OS.get_name()
+	
+	if os == "X11":
+		expected_prefix = "/home/%s/.local/share/git-hydra/tmp/" % OS.get_environment("USER")
+	elif os == "Windows":
+		helpers.crash("Need to figure out delete_prefix on Windows")
+	else:
+		helpers.crash("Unsupported OS: %s" % os)
+	
+	if path_inside.substr(0,expected_prefix.length()) != expected_prefix:
+		helpers.crash("Refusing to delete directory %s that does not start with %s" % [path_inside, expected_prefix])
+	else:
+		game.global_shell.run("rm -rf '%s'" % path_inside)
diff --git a/main.gd b/main.gd
index 638122a..d8a664c 100644
--- a/main.gd
+++ b/main.gd
@@ -129,8 +129,8 @@ func load_level(id):
 	
 	# We're actually destroying stuff here.
 	# Make sure that active_repository is in a temporary directory.
-	_careful_delete(active_repository_path)
-	_careful_delete(goal_repository_path)
+	helpers.careful_delete(active_repository_path)
+	helpers.careful_delete(goal_repository_path)
 		
 	var goal_script_content = helpers.read_file(goal_script, "")
 	var active_script_content = helpers.read_file(active_script, "")
@@ -156,23 +156,6 @@ func load_level(id):
 	yield(t, "timeout")
 	AudioServer.set_bus_mute(AudioServer.get_bus_index("Master"), false)
 	# FIXME: Need to clean these up when switching levels somehow.
-	
-func _careful_delete(path_inside):
-	var expected_prefix
-	
-	var os = OS.get_name()
-	
-	if os == "X11":
-		expected_prefix = "/home/%s/.local/share/git-hydra/tmp/" % OS.get_environment("USER")
-	elif os == "Windows":
-		helpers.crash("Need to figure out delete_prefix on Windows")
-	else:
-		helpers.crash("Unsupported OS: %s" % os)
-	
-	if path_inside.substr(0,expected_prefix.length()) != expected_prefix:
-		helpers.crash("Refusing to delete directory %s that does not start with %s" % [path_inside, expected_prefix])
-	else:
-		game.global_shell.run("rm -rf '%s'" % path_inside)
 
 func reload_level():
 	load_level(current_level)
diff --git a/sandbox.gd b/sandbox.gd
index 0ed10f5..b289fa0 100644
--- a/sandbox.gd
+++ b/sandbox.gd
@@ -1,16 +1,28 @@
 extends Control
 
 func _ready():
+	var path = null
+	
 	var args = helpers.parse_args()
-	var path = game.tmp_prefix_inside
 	if args.has("sandbox"):
 		if args["sandbox"] is String:
+			if args["sandbox"] == ".":
+				args["sandbox"] = OS.get_environment("PWD")
 			var dir = Directory.new()
 			if dir.dir_exists(args["sandbox"]):
 				path = args["sandbox"]
 			else:
 				helpers.crash("Directory %s does not exist" % args["sandbox"])
 	
+	if path == null:
+		path = game.tmp_prefix_inside+"/repos/sandbox/"
+		helpers.careful_delete(path)
+		
+		game.global_shell.run("mkdir " + path)
+		game.global_shell.cd(path)
+		game.global_shell.run("git init")
+		game.global_shell.run("git symbolic-ref HEAD refs/heads/main")
+	
 	$HSplitContainer/Repository.path = path
 
 	get_tree().set_screen_stretch(SceneTree.STRETCH_MODE_2D, SceneTree.STRETCH_ASPECT_KEEP, Vector2(1920, 1080), 1.5)