diff --git a/display.lisp b/display.lisp
index 52e3e69..1dc2736 100644
--- a/display.lisp
+++ b/display.lisp
@@ -18,7 +18,8 @@
 
 (defpackage :flora-search-aurora.display
   (:use :cl)
-  (:export #:make-screen-matrix #:print-screen-matrix #:screen-matrix-set-map))
+  (:export #:make-screen-matrix #:print-screen-matrix #:matrix-delta
+           #:clear-screen))
 
 (in-package :flora-search-aurora.display)
 
@@ -65,7 +66,9 @@ that change between a→b (favouring those in b) — all others are nil."
   (do-for-cell matrix
     (when (characterp cell)
       (move-cursor (+ i 1) (+ j 1))
-      (write-char cell))))
+      (write-char cell)))
+  (destructuring-bind (i j) (array-dimensions matrix)
+      (move-cursor i j)))
 
 
 (defun make-screen-matrix ()
@@ -74,43 +77,10 @@ that change between a→b (favouring those in b) — all others are nil."
   (make-array '(20 72) :initial-element #\space))
 
 
-(defun screen-matrix-set-char-cell (matrix cell)
-  "Set a matrice's (2d array's) element corresponding to
-a Tiled cell's character-value, using it's column and row."
-  (setf (aref matrix
-              (cl-tiled:cell-row cell)
-              (cl-tiled:cell-column cell))
-        (tile-character
-         (cl-tiled:cell-tile cell))))
-
-
-(defun screen-matrix-set-map (matrix map-path)
-  "Draw a Tiled-format tilemap to the 2D array."
-  (mapcar (lambda (layer) (screen-matrix-set-map-layer matrix layer))
-          (cl-tiled:map-layers (cl-tiled:load-map map-path)))
-  matrix)
-
-
-(defun screen-matrix-set-map-layer (matrix tile-layer)
-  "Set an array's elements to those corresponding the given Tiled
-tile-layer's cells. a Tiled tile-layer to the screen."
-  (mapcar (lambda (cell) (screen-matrix-set-char-cell matrix cell))
-          (cl-tiled:layer-cells tile-layer))
-  matrix)
-
-
-(defun tile-character (tile)
-  "Given a tileset's tile, return it's corresponding text character,
-assuming that the tileset is a bitmap font starting with char-code 32
-with 15 characters-per-line."
-  (code-char
-   (+ (* (cl-tiled:tile-row tile) 15)
-      (cl-tiled:tile-column tile)
-      32)))
-
-
-;;; ~ Utilities ~
-
+
+;;; ———————————————————————————————————
+;;; Misc. utils
+;;; ———————————————————————————————————
 (defun move-cursor (row column &key (stream *standard-output*))
   "Moves cursor to desired position.
 Borrowed from https://github.com/gorozhin/chlorophyll/
diff --git a/flora-search-aurora.lisp b/flora-search-aurora.lisp
index 4e5cc21..c398e51 100644
--- a/flora-search-aurora.lisp
+++ b/flora-search-aurora.lisp
@@ -22,12 +22,13 @@
 (load "input.lisp")
 (load "display.lisp")
 (load "ui.lisp")
+(load "overworld.lisp")
 
 (defpackage :flora-search-aurora
   (:export #:main)
   (:use :cl
    :flora-search-aurora.input :flora-search-aurora.display
-   :flora-search-aurora.ui))
+   :flora-search-aurora.overworld :flora-search-aurora.ui))
 
 (in-package :flora-search-aurora)
 
@@ -67,21 +68,18 @@
       (menu-loop matrix options-menu))))
 
 
+(defun make-main-overworld-loop ()
+  (lambda (matrix)
+    (overworld-loop matrix "/home/jaidyn/.local/src/games/flora search aurora/res/map.tmx")))
+
+
 (defun main ()
   "A pathetic fascimile of a main loop. Look, I'm still tinkering!"
   (cl-charms:with-curses ()
    (cl-charms:enable-raw-input :interpret-control-characters 't)
    (clear-screen)
-   (state-loop (list (make-main-menu-loop)))))
+   (state-loop (list (make-main-menu-loop)
+                     (make-main-overworld-loop)))))
 
 
-;;    (print-screen-matrix
-;      (render-menu-strip matrix items 2 5
-;;                         :max-item-width 20 :height 3)))
-;;    (screen-matrix-set-map
-;;     matrix
-;;      (print-screen-matrix matrix)
-;;      (loop (print (normalize-char-plist (read-char-plist))))
-;;      (sleep 5)))
-
 (main)
diff --git a/overworld.lisp b/overworld.lisp
new file mode 100644
index 0000000..7d52e69
--- /dev/null
+++ b/overworld.lisp
@@ -0,0 +1,93 @@
+;;;; Copyright © 2023, Jaidyn Ann <jadedctrl@posteo.at>
+;;;;
+;;;; This program is free software: you can redistribute it and/or
+;;;; modify it under the terms of the GNU General Public License as
+;;;; published by the Free Software Foundation, either version 3 of
+;;;; the License, or (at your option) any later version.
+;;;;
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;;; FLORA-SEARCH-AURORA.OVERWORLD
+;;;; All game-functions and data relating to the “overworld” (that is,
+;;;; the primary gameplay, the RPG-ish-ish bits).
+
+(defpackage :flora-search-aurora.overworld
+  (:use :cl
+   :flora-search-aurora.input :flora-search-aurora.display
+   :flora-search-aurora.ui)
+  (:export #:overworld-loop))
+
+(in-package :flora-search-aurora.overworld)
+
+
+
+;;; ———————————————————————————————————
+;;; Overworld loop
+;;; ———————————————————————————————————
+(defun overworld-loop (matrix map)
+  "The state loop to be used for displaying/processing/input-managing
+with menus."
+  (let ((map (if (or (stringp map) (pathnamep map))
+                 (cl-tiled:load-map map)
+                 map)))
+    (sleep .02)
+    (overworld-loop-draw matrix map)
+    (overworld-loop-update map)))
+
+
+(defun overworld-loop-draw (matrix map)
+  "Drawing for."
+  (matrix-write-tiled-map matrix map))
+
+
+
+(defun overworld-loop-update (map)
+  "The update loop for menus. It processes all input, state, etc, and
+returns the new state of the menu."
+  't)
+
+
+
+
+;;; ———————————————————————————————————
+;;; Mapping & map-rendering
+;;; ———————————————————————————————————
+(defun matrix-write-tiled-cell (matrix cell)
+  "Set a matrice's (2d array's) element corresponding to
+a Tiled cell's character-value, using it's column and row."
+  (setf (aref matrix
+              (cl-tiled:cell-row cell)
+              (cl-tiled:cell-column cell))
+        (tiled-tile-character
+         (cl-tiled:cell-tile cell))))
+
+
+(defun matrix-write-tiled-map (matrix map)
+  "Draw a Tiled-format tilemap to the 2D array."
+  (mapcar (lambda (layer) (matrix-write-tiled-map-layer matrix layer))
+          (cl-tiled:map-layers map))
+  matrix)
+
+
+(defun matrix-write-tiled-map-layer (matrix tile-layer)
+  "Set an array's elements to those corresponding the given Tiled
+tile-layer's cells. a Tiled tile-layer to the screen."
+  (mapcar (lambda (cell) (matrix-write-tiled-cell matrix cell))
+          (cl-tiled:layer-cells tile-layer))
+  matrix)
+
+
+(defun tiled-tile-character (tile)
+  "Given a tileset's tile, return it's corresponding text character,
+assuming that the tileset is a bitmap font starting with char-code 32
+with 15 characters-per-line."
+  (code-char
+   (+ (* (cl-tiled:tile-row tile) 15)
+      (cl-tiled:tile-column tile)
+      32)))