diff --git a/core/simulation_engine.py b/core/simulation_engine.py
index d8deaec..a086664 100644
--- a/core/simulation_engine.py
+++ b/core/simulation_engine.py
@@ -3,6 +3,8 @@ import time
 import random
 import sys
 
+from pygame_gui import UIManager
+
 from world.base.brain import CellBrain, FlexibleNeuralNetwork
 from world.world import World, Position, Rotation
 from world.objects import FoodObject, DefaultCell
@@ -16,7 +18,15 @@ from ui.hud import HUD
 class SimulationEngine:
     def __init__(self):
         pygame.init()
-        self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT), vsync=1)
+
+        info = pygame.display.Info()
+        self.window_width, self.window_height = info.current_w, info.current_h
+        self.screen = pygame.display.set_mode((self.window_width, self.window_height),
+                                              pygame.RESIZABLE | pygame.FULLSCREEN)
+
+        self.ui_manager = UIManager((self.window_width, self.window_height))
+
+        # self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT), vsync=1)
         pygame.display.set_caption("Dynamic Abstraction System Testing")
         self.clock = pygame.time.Clock()
         self.camera = Camera(SCREEN_WIDTH, SCREEN_HEIGHT, RENDER_BUFFER)
@@ -34,6 +44,12 @@ class SimulationEngine:
 
         self.running = True
 
+    def _update_simulation_view(self):
+        self.sim_view_width = int(self.window_width * 0.75)
+        self.sim_view_height = int(self.window_height * 0.75)
+        self.sim_view = pygame.Surface((self.sim_view_width, self.sim_view_height))
+        self.sim_view_rect = self.sim_view.get_rect(center=(self.window_width // 2, self.window_height // 2))
+
     @staticmethod
     def _setup_world():
         world = World(CELL_SIZE, (CELL_SIZE * GRID_WIDTH, CELL_SIZE * GRID_HEIGHT))
diff --git a/ui/hud.py b/ui/hud.py
index e09cd57..c6fbfcb 100644
--- a/ui/hud.py
+++ b/ui/hud.py
@@ -10,11 +10,11 @@ import math
 
 
 class HUD:
-    def __init__(self):
+    def __init__(self, ui_manager):
         self.font = pygame.font.Font("freesansbold.ttf", FONT_SIZE)
         self.legend_font = pygame.font.Font("freesansbold.ttf", LEGEND_FONT_SIZE)
 
-        self.manager = pygame_gui.UIManager((SCREEN_WIDTH, SCREEN_HEIGHT), "ui/theme.json")
+        self.manager = ui_manager
 
     def render_mouse_position(self, screen, camera):
         """Render mouse position in top left."""