diff --git a/config/constants.py b/config/constants.py
index 486ef30..0fa60a3 100644
--- a/config/constants.py
+++ b/config/constants.py
@@ -2,8 +2,8 @@
 """Configuration constants for the simulation."""
 
 # Screen settings
-SCREEN_WIDTH = 1920 // 2
-SCREEN_HEIGHT = 1080 // 2
+SCREEN_WIDTH = 1920
+SCREEN_HEIGHT = 1080
 
 # Colors
 BLACK = (0, 0, 0)
diff --git a/core/input_handler.py b/core/input_handler.py
index 4ed32e8..7c227b4 100644
--- a/core/input_handler.py
+++ b/core/input_handler.py
@@ -27,11 +27,13 @@ class InputHandler:
         self.default_tps = DEFAULT_TPS
         self.sprint_mode = False
 
-    def handle_events(self, events):
+    def handle_events(self, events, ui_manager):
         """Process all pygame events and return game state."""
         running = True
 
         for event in events:
+            ui_manager.process_events(event)
+
             if event.type == pygame.QUIT:
                 running = False
             elif event.type == pygame.KEYDOWN:
diff --git a/core/simulation_engine.py b/core/simulation_engine.py
index 119b25e..d8deaec 100644
--- a/core/simulation_engine.py
+++ b/core/simulation_engine.py
@@ -69,7 +69,8 @@ class SimulationEngine:
         tick_interval = 1.0 / self.input_handler.tps
 
         # Handle events
-        self.running = self.input_handler.handle_events(pygame.event.get())
+        events = pygame.event.get()
+        self.running = self.input_handler.handle_events(events, self.hud.manager)
 
         if self.input_handler.sprint_mode:
             # Sprint mode: run as many ticks as possible, skip rendering
@@ -104,6 +105,7 @@ class SimulationEngine:
 
                 self.input_handler.update_selected_objects()
                 self.world.tick_all()
+                self.hud.manager.update(deltatime)
 
             if current_time - self.last_tps_time >= 1.0:
                 self.actual_tps = self.tick_counter
@@ -113,6 +115,7 @@ class SimulationEngine:
             self.last_tick_time = time.perf_counter()
             self.last_tps_time = time.perf_counter()
 
+        self.hud.manager.draw_ui(self.screen)
         self._update(deltatime)
         self._render()
 
diff --git a/ui/hud.py b/ui/hud.py
index f7b73d1..e09cd57 100644
--- a/ui/hud.py
+++ b/ui/hud.py
@@ -2,6 +2,7 @@
 """Handles HUD elements and text overlays."""
 
 import pygame
+import pygame_gui
 from config.constants import *
 from world.base.brain import CellBrain, FlexibleNeuralNetwork
 from world.objects import DefaultCell
@@ -13,6 +14,8 @@ class HUD:
         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")
+
     def render_mouse_position(self, screen, camera):
         """Render mouse position in top left."""
         mouse_x, mouse_y = camera.get_real_coordinates(*pygame.mouse.get_pos())