diff --git a/tetris.py b/tetris.py
index 38bb5b2..aa8b6dc 100644
--- a/tetris.py
+++ b/tetris.py
@@ -80,6 +80,17 @@ class Tetromino(NamedTuple):
         return id(self)
 
 
+class HashableDict(dict):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+    def __eq__(self, other):
+        return id(self) == id(other)
+
+    def __hash__(self):
+        return id(self)
+
+
 class Action(NamedTuple):
     key: int
     type: Type
@@ -94,13 +105,17 @@ class Action(NamedTuple):
         SWAP_HOLD = auto()
         MOVE_LEFT = auto()
         MOVE_RIGHT = auto()
+        OPEN_HELP = auto()
 
         # Game over
         RESTART = auto()
 
+        # Help
+        CLOSE_HELP = auto()
+
     @staticmethod
     def make_map(*acts):
-        return {act.key: act for act in acts}
+        return HashableDict({act.key: act for act in acts})
 
 
 class Font:
@@ -151,25 +166,29 @@ class Font:
     @cache
     def compute_extents(self, text: str) -> Size:
         text = text.lower()
-        multi_row = False
         total_width = 0
         total_height = 0
         last_width = 0
         last_height = 0
         for char in text:
             if char == "\n":
-                multi_row = True
                 total_width = max(total_width, last_width)
+                if last_width == 0:
+                    # empty line
+                    last_height = self.glyphs[" "].height * self.scale
                 last_width = 0
-                total_height += last_height
+                total_height += last_height + self.row_kern
                 last_height = 0
             else:
                 glyph = self.glyphs[char]
                 last_width += glyph.width * self.scale + self.kern
                 last_height = max(last_height, glyph.height * self.scale)
         total_width = max(last_width, total_width) - self.kern
+        if total_width == 0:
+            # empty line
+            last_height = self.glyphs[" "].height * self.scale
         total_height += last_height
-        return Size(total_width, total_height + (multi_row * self.row_kern))
+        return Size(total_width, total_height)
 
     def render_text(
         self, text: str, dest: pygame.surface.Surface, x: int, y: int, color
@@ -179,6 +198,9 @@ class Font:
         max_height = 0
         for char in text:
             if char == "\n":
+                if x == initial_x:
+                    # empty row
+                    max_height = self.glyphs[" "].height * self.scale
                 y += max_height + self.row_kern
                 max_height = 0
                 x = initial_x
@@ -271,7 +293,7 @@ class Game:
             pygame.K_s,
             Action.Type.SWAP_HOLD,
             False,
-            "Swap the current piece and the held piece.",
+            "Swap the current and held piece.",
         ),
         Action(
             pygame.K_DOWN, Action.Type.DROP, True, "Drop the current piece."
@@ -288,10 +310,30 @@ class Game:
             True,
             "Move the current piece right.",
         ),
+        Action(
+            pygame.K_h,
+            Action.Type.OPEN_HELP,
+            False,
+            "Toggle the help menu.",
+        ),
     )
     GAME_OVER_ACTION_MAP = Action.make_map(
         Action(pygame.K_r, Action.Type.RESTART, False, "Start a new game.")
     )
+    HELP_ACTION_MAP = Action.make_map(
+        Action(
+            pygame.K_ESCAPE,
+            Action.Type.CLOSE_HELP,
+            False,
+            "Close the help menu.",
+        ),
+        Action(
+            pygame.K_h,
+            Action.Type.CLOSE_HELP,
+            False,
+            "Close the help menu.",
+        ),
+    )
 
     FONT = Font(
         6,
@@ -721,20 +763,35 @@ class Game:
         ],
     )
     SMALL_FONT = FONT.scaled(4, 2, 2)
-    TINY_FONT = FONT.scaled(2, 1, 1)
+    TINY_FONT = FONT.scaled(2, 2, 2)
     CONTROL_DISPLAY_BORDER = 5
-    NEXT_HELD_BOX_SIZE = 5
+    INFO_BOX_BORDER_SIZE = 5
+    HELP_MENU_INSET = 10
     CONTROLS_START_X = (BOARD_SIZE.width + 2) * CELL_SIZE.width
 
+    @staticmethod
+    @cache
+    def make_help_string(am: dict[int, Action]):
+        key_names = [pygame.key.name(k) for k in am.keys()]
+        max_key_len = max(map(len, key_names))
+        out = ""
+        for act in am.values():
+            if out:
+                out += "\n"
+            out += f"{pygame.key.name(act.key).rjust(max_key_len)}: {act.desc}"
+        return out
+
     def __init__(self):
         self._game_over = False
+        self.high_score = 0
+        self._score = 0
 
     @property
-    def game_over(self):
+    def game_over(self) -> bool:
         return self._game_over
 
     @game_over.setter
-    def game_over(self, newval):
+    def game_over(self, newval: bool):
         if newval != self._game_over:
             self.pending_actions = []
         self._game_over = newval
@@ -743,6 +800,16 @@ class Game:
         else:
             self.action_map = Game.GAME_ACTION_MAP
 
+    @property
+    def score(self) -> int:
+        return self._score
+
+    @score.setter
+    def score(self, newval: int):
+        self._score = newval
+        if newval > self.high_score:
+            self.high_score = newval
+
     def random_tetromino(self):
         if not self.cur_random_peice_seq:
             self.cur_random_peice_seq = list(Game.TETROMINOS)
@@ -999,7 +1066,6 @@ class Game:
         elif not any(self.board[next(iter(self.clearing_rows))]):
             # Order matters here
             for y in sorted(self.clearing_rows):
-                print(y)
                 drop_rows_above_for_clear(y)
             self.clearing_rows = set()
             self.clearing_frames = self.CLEAR_SPEED
@@ -1011,8 +1077,13 @@ class Game:
             else:
                 self.clearing_frames += 1
 
-    def draw_score(self):
-        text = f"Score: {self.score:05}"
+    def draw_score_and_instructions(self):
+        text = (
+            "Press <h> \nfor help.\n"
+            "\n"
+            f"Score: {self.score:05}\n"
+            f"   HS: {self.high_score:05}"
+        )
         exts = self.TINY_FONT.compute_extents(text)
         x = Game.CONTROLS_START_X + Game.CONTROL_DISPLAY_BORDER
         y = (
@@ -1067,7 +1138,7 @@ class Game:
                 box_size,
                 box_size,
             ),
-            width=Game.NEXT_HELD_BOX_SIZE,
+            width=Game.INFO_BOX_BORDER_SIZE,
         )
         if piece:
             piece_surf = self.get_scaled_piece(piece, 0.75)
@@ -1101,11 +1172,44 @@ class Game:
             width,
         )
 
+    def process_and_draw_help_overlay(self):
+        self.draw_gray_overlay()
+
+        hs = Game.make_help_string(Game.GAME_ACTION_MAP)
+        exts = Game.TINY_FONT.compute_extents(hs)
+
+        sw, sh = self.screen.get_size()
+
+        tot_border = Game.INFO_BOX_BORDER_SIZE + Game.HELP_MENU_INSET
+        box_x = sw // 2 - exts.width // 2 - tot_border
+        box_y = sh // 2 - exts.height // 2 - tot_border
+        box_w = exts.width + 2 * tot_border
+        box_h = exts.height + 2 * tot_border
+
+        pygame.draw.rect(self.screen, "black", (box_x, box_y, box_w, box_h))
+        pygame.draw.rect(
+            self.screen,
+            Game.PALETTE["gray"].norm,
+            (box_x, box_y, box_w, box_h),
+            width=Game.INFO_BOX_BORDER_SIZE,
+        )
+
+        Game.TINY_FONT.center_text(hs, self.screen, sw // 2, sh // 2, "white")
+
+        if Action.Type.CLOSE_HELP in self.pending_actions:
+            self.pending_actions = []
+            self.action_map = Game.GAME_ACTION_MAP
+            self.help_mode = False
+
     def game_loop(self):
         self.doing_drop = False
 
         self.maybe_clear_rows()
-        if not self.clearing_rows:
+        if Action.Type.OPEN_HELP in self.pending_actions:
+            # do no matter what
+            self.help_mode = True
+            self.action_map = Game.HELP_ACTION_MAP
+        elif not self.clearing_rows:
             self.process_game_actions()
             self.advance_piece()
         else:
@@ -1122,7 +1226,10 @@ class Game:
         self.draw_board_border()
         self.draw_held_and_next_piece()
 
-        self.draw_score()
+        self.draw_score_and_instructions()
+
+        if self.help_mode:
+            self.process_and_draw_help_overlay()
 
     def start_new_game(self):
         self.clear_board()
@@ -1162,29 +1269,57 @@ class Game:
         self.draw_board_border()
         self.draw_held_and_next_piece()
 
-        self.draw_score()
+        self.draw_score_and_instructions()
 
         self.draw_gray_overlay()
 
-        ss = self.screen.get_size()
+        sw, sh = self.screen.get_size()
         exts = self.FONT.compute_extents("Game Over!")
-        self.FONT.center_text(
-            "Game Over!", self.screen, ss[0] // 2, ss[1] // 2, "white"
-        )
         score_text = f"Score: {self.score:05}"
-        self.SMALL_FONT.center_text(
-            score_text,
+        exts2 = self.SMALL_FONT.compute_extents(score_text)
+        exts3 = self.SMALL_FONT.compute_extents("Press <r> to retry.")
+        text_width = max(exts.width, exts2.width, exts3.width)
+        text_height = (
+            exts.height + exts2.height + exts3.height + 2 * self.FONT.row_kern
+        )
+
+        tot_border = Game.INFO_BOX_BORDER_SIZE + Game.HELP_MENU_INSET
+        box_x = sw // 2 - text_width // 2 - tot_border
+        box_y = sh // 2 - text_height // 2 - tot_border
+        box_w = text_width + 2 * tot_border
+        box_h = text_height + 2 * tot_border
+
+        pygame.draw.rect(self.screen, "black", (box_x, box_y, box_w, box_h))
+        pygame.draw.rect(
             self.screen,
-            ss[0] // 2,
-            ss[1] // 2 + exts.height + self.FONT.row_kern,
+            Game.PALETTE["gray"].norm,
+            (box_x, box_y, box_w, box_h),
+            width=Game.INFO_BOX_BORDER_SIZE,
+        )
+
+        self.FONT.render_text(
+            "Game Over!",
+            self.screen,
+            sw // 2 - exts.width // 2,
+            sh // 2 - text_height // 2,
             "white",
         )
-        exts2 = self.SMALL_FONT.compute_extents(score_text)
-        self.SMALL_FONT.center_text(
+        self.SMALL_FONT.render_text(
+            score_text,
+            self.screen,
+            sw // 2 - exts2.width // 2,
+            sh // 2 - text_height // 2 + exts.height + self.FONT.row_kern,
+            "white",
+        )
+        self.SMALL_FONT.render_text(
             "Press <r> to retry.",
             self.screen,
-            ss[0] // 2,
-            ss[1] // 2 + exts.height + exts2.height + 2 * self.FONT.row_kern,
+            sw // 2 - exts3.width // 2,
+            sh // 2
+            - text_height // 2
+            + exts.height
+            + exts2.height
+            + 2 * self.FONT.row_kern,
             "white",
         )
 
@@ -1232,6 +1367,8 @@ class Game:
         self.key_states = defaultdict(lambda: False)
         self.pending_actions = []
 
+        self.help_mode = False
+        self.high_score = 0
         self.start_new_game()
 
     def run(self):