diff --git a/impostor.inc b/impostor.inc
index 4f7d075..5866fe1 100644
--- a/impostor.inc
+++ b/impostor.inc
@@ -3,6 +3,7 @@ init/init.module.lua
 init/init.config.lua
 init/init.ascension.lua
 init/init.context.lua
+init/init.context_debug.lua
 system/system.util.lua
 system/system.print.lua
 system/system.input.lua
@@ -73,6 +74,7 @@ window/window.intro.brief.lua
 window/window.menu.lua
 window/window.controls.lua
 window/window.audiotest.lua
+window/window.ascend_debug.lua
 window/window.popup.lua
 window/window.minigame.mash.lua
 window/window.minigame.rhythm.lua
diff --git a/inc/init/init.context_debug.lua b/inc/init/init.context_debug.lua
new file mode 100644
index 0000000..7480f38
--- /dev/null
+++ b/inc/init/init.context_debug.lua
@@ -0,0 +1,65 @@
+-- Debug helper: start the game at a specific ascension level.
+-- Set enabled = true and asc_level = 0..Ascension.get_max_level() before launching.
+ContextDebug = {
+  enabled   = false,
+  asc_level = 0,
+}
+
+local _level_overrides = {
+  [0] = {
+    day_count            = 1,
+    home_norman_visible  = true,
+    have_been_to_office  = false,
+    have_done_work_today = false,
+    have_met_sumphore    = false,
+  },
+}
+for i = 1, Ascension.get_max_level() do
+  _level_overrides[i] = {
+    day_count            = i + 3,
+    home_norman_visible  = true,
+    have_been_to_office  = false,
+    have_done_work_today = false,
+    have_met_sumphore    = true,
+  }
+end
+
+--- Returns Context.initial_data() overridden for the given ascension level.
+--- @within Context
+--- @param level number Target ascension level (0..Ascension.get_max_level()).
+--- @return table Debug-patched initial context data.
+function Context.initial_data_debug_asc(level)
+  local data = Context.initial_data()
+  data.test_mode        = true
+  data.game_in_progress = true
+  data.ascension        = { level = level }
+  local overrides = _level_overrides[level] or _level_overrides[0]
+  for k, v in pairs(overrides) do
+    data[k] = v
+  end
+  return data
+end
+
+for i = 0, Ascension.get_max_level() do
+  Context["initial_data_debug_asc_" .. i] = function()
+    return Context.initial_data_debug_asc(i)
+  end
+end
+
+--- Starts the game at the given ascension level (defaults to ContextDebug.asc_level).
+--- Wire this to a key or call it directly; do not use Context.new_game() when debugging.
+--- @within Context
+--- @param level number|nil Target ascension level.
+function Context.new_game_debug(level)
+  ContextDebug.enabled   = true
+  ContextDebug.asc_level = level or ContextDebug.asc_level
+
+  local data = Context["initial_data_debug_asc_" .. ContextDebug.asc_level]()
+  for k in pairs(Context) do
+    if type(Context[k]) ~= "function" then Context[k] = nil end
+  end
+  for k, v in pairs(data) do Context[k] = v end
+
+  MenuWindow.refresh_menu_items()
+  Screen.get_by_id(Context.game.current_screen).init()
+end
diff --git a/inc/window/window.ascend_debug.lua b/inc/window/window.ascend_debug.lua
new file mode 100644
index 0000000..f0b1c03
--- /dev/null
+++ b/inc/window/window.ascend_debug.lua
@@ -0,0 +1,41 @@
+--- @section AscendDebugWindow
+local _level = 0
+
+--- Initialises the ASCEND debug start window.
+--- @within AscendDebugWindow
+function AscendDebugWindow.init()
+  _level = 0
+end
+
+--- Draws the ASCEND debug start window.
+--- @within AscendDebugWindow
+function AscendDebugWindow.draw()
+  UI.draw_top_bar("ASCEND Debug Start")
+
+  local cx = Config.screen.width / 2
+  local cy = Config.screen.height / 2
+
+  local left_arrow  = _level > 0                        and "<- " or "   "
+  local right_arrow = _level < Ascension.get_max_level() and " ->" or "   "
+  local label = left_arrow .. "Start at: " .. _level .. right_arrow
+  Print.text_center(label, cx, cy - 4, Config.colors.white, false, 1)
+
+  Print.text_center("Z/select: start   X/back: menu", cx, Config.screen.height - 10, Config.colors.dark_grey, false, 1)
+end
+
+--- Updates the ASCEND debug start window logic.
+--- @within AscendDebugWindow
+function AscendDebugWindow.update()
+  if Input.left() then
+    _level = math.max(0, _level - 1)
+  elseif Input.right() then
+    _level = math.min(Ascension.get_max_level(), _level + 1)
+  elseif Input.select() then
+    Audio.sfx_select()
+    Context.new_game_debug(_level)
+    GameWindow.set_state("game")
+  elseif Input.back() then
+    Audio.sfx_deselect()
+    GameWindow.set_state("menu")
+  end
+end
diff --git a/inc/window/window.menu.lua b/inc/window/window.menu.lua
index ad33971..fe15809 100644
--- a/inc/window/window.menu.lua
+++ b/inc/window/window.menu.lua
@@ -161,6 +161,13 @@ function MenuWindow.ddr_test()
   MinigameDDRWindow.start("menu", "generated", { special_mode = "only_nothing" })
 end
 
+--- Opens the ASCEND debug start window.
+--- @within MenuWindow
+function MenuWindow.ascend_debug()
+  AscendDebugWindow.init()
+  GameWindow.set_state("ascend_debug")
+end
+
 --- Refreshes the list of menu items based on current game state.
 --- @within MenuWindow
 function MenuWindow.refresh_menu_items()
@@ -178,6 +185,7 @@ function MenuWindow.refresh_menu_items()
     table.insert(_menu_items, {label = "Audio Test",         decision = MenuWindow.audio_test})
     table.insert(_menu_items, {label = "To Be Continued...", decision = MenuWindow.continued})
     table.insert(_menu_items, {label = "DDR Test",           decision = MenuWindow.ddr_test})
+    table.insert(_menu_items, {label = "Start at ASCEND N",  decision = MenuWindow.ascend_debug})
   end
 
   table.insert(_menu_items, {label = "Exit", decision = MenuWindow.exit})
diff --git a/inc/window/window.register.lua b/inc/window/window.register.lua
index a3388ac..722a364 100644
--- a/inc/window/window.register.lua
+++ b/inc/window/window.register.lua
@@ -22,6 +22,9 @@ Window.register("controls", ControlsWindow)
 AudioTestWindow = {}
 Window.register("audiotest", AudioTestWindow)
 
+AscendDebugWindow = {}
+Window.register("ascend_debug", AscendDebugWindow)
+
 MinigameButtonMashWindow = {}
 Window.register("minigame_button_mash", MinigameButtonMashWindow)