diff --git a/game_map.py b/game_map.py
new file mode 100644
index 0000000..ad742ac
--- /dev/null
+++ b/game_map.py
@@ -0,0 +1,18 @@
+import numpy as np # type: ignore
+from tcod.console import Console
+
+import tile_types
+
+class GameMap:
+    def __init__(self, width: int, height: int):
+        self.width, self.height = width, height;
+        self.tiles = np.full((width, height), fill_value=tile_types.floor, order="F")
+
+        self.tiles[30:33, 22] = tile_types.wall
+
+    def in_bounds(self, x: int, y: int) -> bool:
+        """Return True if x and y are inside of the bounds of the map."""
+        return 0 <= x < self.width and 0 <= y < self.height
+
+    def render(self, console: Console):
+        console.tiles_rgb[0: self.width, 0: self.height] = self.tiles["dark"]
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diff --git a/tile_types.py b/tile_types.py
new file mode 100644
index 0000000..c44d1b9
--- /dev/null
+++ b/tile_types.py
@@ -0,0 +1,43 @@
+from typing import Tuple
+
+import numpy as np  # type: ignore
+
+# Tile graphics structured type compatible with Console.tiles_rgb.
+graphic_dt = np.dtype(
+    [
+        ("ch", np.int32),  # Unicode codepoint.
+        ("fg", "3B"),  # 3 unsigned bytes, for RGB colors.
+        ("bg", "3B",)
+    ]
+)
+
+# Tile struct used for statically defined tile data.
+tile_dt = np.dtype(
+    [
+        ("walkable", np.bool),  # True if this tile can be walked over.
+        ("transparent", np.bool), # True if this tile doesn't block FOV.
+        ("dark", graphic_dt), # Graphics for when this tile is not in FOV.
+    ]
+)
+
+def new_tile(
+    *, # Enforce the use of keywords, so that parameter order doesn't matter
+    walkable: int,
+    transparent: int,
+    dark: Tuple[int, Tuple[int, int, int], Tuple[int, int, int]]
+) -> np.ndarray:
+    """Helper function for defining individual tile types"""
+    return np.array((walkable, transparent, dark), dtype=tile_dt)
+
+
+floor = new_tile(
+    walkable=True,
+    transparent=True,
+    dark=(ord(" "), (255, 255, 255), (50, 50, 150))
+)
+
+wall = new_tile(
+    walkable=False,
+    transparent=False,
+    dark=(ord(" "), (255, 255, 255), (0, 0, 100))
+)
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