diff --git a/crates/simulator/src/main.rs b/crates/simulator/src/main.rs
index 8f1f432..8d785f8 100644
--- a/crates/simulator/src/main.rs
+++ b/crates/simulator/src/main.rs
@@ -4,23 +4,30 @@ use std::{error::Error, thread, time::Duration};
 
 use embedded_graphics::{pixelcolor::Rgb888, prelude::Size};
 use embedded_graphics_simulator::{
-    OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
+    OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window, sdl2::Keycode,
 };
 
 fn main() -> Result<(), Box<dyn Error>> {
     let mut display = SimulatorDisplay::<Rgb888>::new(Size::new(240, 240));
 
-    ui::start_ui(&mut display)?;
-
     let output_settings = OutputSettingsBuilder::new().scale(2).build();
     let mut window = Window::new("Vaka simulator", &output_settings);
 
+    let mut i = 0;
     'running: loop {
         window.update(&display);
 
         for event in window.events() {
-            if matches!(event, SimulatorEvent::Quit) {
-                break 'running;
+            match event {
+                SimulatorEvent::KeyDown {
+                    keycode: Keycode::Return,
+                    ..
+                } => {
+                    i+=1;
+                    ui::draw_ui(&mut display, i)?;
+                }
+                SimulatorEvent::Quit => break 'running,
+                _ => {}
             }
         }
 
diff --git a/crates/ui/src/lib.rs b/crates/ui/src/lib.rs
index 29595b2..2c9b94e 100644
--- a/crates/ui/src/lib.rs
+++ b/crates/ui/src/lib.rs
@@ -7,6 +7,7 @@ use mousefood::prelude::*;
 use ratatui::{
     Terminal,
     style::Stylize,
+    text::Line,
     widgets::{Block, Paragraph},
 };
 
@@ -16,7 +17,7 @@ pub const fn hello_world() -> &'static str {
     "Hello, world from Ratatui"
 }
 
-pub fn start_ui<D>(display: &mut D) -> Result<(), Box<dyn Error>>
+pub fn draw_ui<D>(display: &mut D, i: usize) -> Result<(), Box<dyn Error>>
 where
     D: DrawTarget<Color = Rgb888> + Dimensions + 'static,
 {
@@ -24,9 +25,12 @@ where
     let mut terminal = Terminal::new(backend)?;
 
     terminal.draw(|frame| {
-        let widget = Paragraph::new(crate::hello_world().bold().yellow())
-            .block(Block::bordered().title("Vaka"))
-            .centered();
+        let widget = Paragraph::new(Line::from(vec![
+            crate::hello_world().bold().yellow(),
+            format!(": {i}").into(),
+        ]))
+        .block(Block::bordered().title("Vaka"))
+        .centered();
 
         frame.render_widget(widget, frame.area());
     })?;