diff --git a/main.lua b/main.lua
index fc1792e..218c6ab 100644
--- a/main.lua
+++ b/main.lua
@@ -2,6 +2,8 @@ local tau = math.pi * 2
 local game = {}
 
 local function load_level(level, bubble_diameter, row_gap)
+  if arg[#arg] == "debug" then require("lldebugger").start() end
+
   local slots = {}
   local bubble_radius = bubble_diameter / 2