diff --git a/src/editor.rs b/src/editor.rs
index 7664e9b..cad2508 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -10,7 +10,7 @@ use crate::{
 		tile::{Direction, GateType, MathOp, MirrorType, PTile, Tile, WireType},
 		Machine,
 	},
-	simple_button,
+	simple_button, slider,
 	solution::{Score, Solution},
 	text_input, texture_option_button, Textures,
 };
@@ -35,7 +35,7 @@ pub struct Editor {
 	tool_menu_mirror: MirrorType,
 	tool_menu_wire: WireType,
 	input_text_selected: bool,
-	sim_speed: f32,
+	sim_speed: u8,
 	time_since_step: f32,
 	exit_state: ExitState,
 	exit_menu: bool,
@@ -91,7 +91,7 @@ impl Editor {
 			output_as_text: false,
 			input_as_text: false,
 			input_text_selected: false,
-			sim_speed: 8.,
+			sim_speed: 8,
 			time_since_step: 0.,
 			tool_menu_math: MathOp::Add,
 			tool_menu_gate: GateType::Equal,
@@ -217,7 +217,7 @@ impl Editor {
 		}
 		if self.sim_state == SimState::Running {
 			self.time_since_step += rl.get_frame_time();
-			if self.time_since_step > 1. / self.sim_speed {
+			if self.time_since_step > 1. / self.sim_speed as f32 {
 				self.time_since_step = 0.;
 				self.step();
 			}
@@ -419,7 +419,11 @@ impl Editor {
 		}
 		draw_scaled_texture(d, textures.get("step"), 332, 4, 2.);
 
-		draw_usize(d, textures, self.machine.step_count(), 372, 4, 5, 2);
+		d.draw_text("speed", 368, 6, 10, Color::WHITE);
+		draw_usize(d, textures, self.sim_speed as usize, 398, 4, 2, 1);
+		slider(d, &mut self.sim_speed, 1, 33, 368, 24, 48, 12);
+
+		draw_usize(d, textures, self.machine.step_count(), 420, 4, 5, 2);
 
 		let mut input_text = String::from_utf8_lossy(self.machine.input()).to_string();
 		let width = d.get_screen_width();
diff --git a/src/main.rs b/src/main.rs
index 6a41bdb..714d2da 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -189,6 +189,7 @@ impl Game {
 
 				if simple_button(d, level_list_width + 10, solution_y, entry_width, 30) {
 					let n = solutions.len();
+					self.selected_solution = solutions.len();
 					solutions.push(Solution::new(level, n));
 				}
 				d.draw_text(
diff --git a/src/util.rs b/src/util.rs
index 5e2f1aa..349360f 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -215,6 +215,34 @@ pub fn draw_usize(
 	}
 }
 
+pub fn slider(
+	d: &mut RaylibDrawHandle,
+	value: &mut u8,
+	min: u8,
+	max: u8,
+	x: i32,
+	y: i32,
+	width: i32,
+	height: i32,
+) -> bool {
+	// the +1 makes the lowest state look slightly filled and the max state fully filled
+	let percent = (*value - min + 1) as f32 / (max - min) as f32;
+	d.draw_rectangle(x, y, width, height, Color::DIMGRAY);
+	d.draw_rectangle(x, y, (width as f32 * percent) as i32, height, Color::CYAN);
+	let mouse_pos = d.get_mouse_position();
+	let bounds = Rectangle::new(x as f32, y as f32, width as f32, height as f32);
+	if d.is_mouse_button_down(MouseButton::MOUSE_BUTTON_LEFT)
+		&& bounds.check_collision_point_rec(mouse_pos)
+	{
+		let percent = (mouse_pos.x - bounds.x) / bounds.width;
+		let new_value = min + (percent * (max - min) as f32) as u8;
+		if *value != new_value {
+			*value = new_value
+		}
+	}
+	false
+}
+
 pub fn userdata_dir() -> PathBuf {
 	PathBuf::from("user")
 }