diff --git a/README.md b/README.md
index c93bcfe..f5244a7 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,6 @@ logic mostly like https://git.crispypin.cc/CrispyPin/marble
 - make direct power (comparator -> machine) work, (needs storing power direction in machine tiles)
 - cut selections, copy to system clipboard
 - timestamps in solutions and blueprints
-- tooltips
 - lock tile types for early levels to make it less overwhelming
 - display tool variant more clearly (it's not obvious there are more states)
 - option to use 8-bit marbles?
diff --git a/src/editor.rs b/src/editor.rs
index bd6bcbe..2f5833d 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -21,7 +21,7 @@ use crate::{
 	solution::{Score, Solution},
 	text_input, texture_option_button,
 	theme::*,
-	userdata_dir, Scroll, Textures, TILE_TEXTURE_SIZE,
+	userdata_dir, Scroll, Textures, Tooltip, TILE_TEXTURE_SIZE,
 };
 
 const HEADER_HEIGHT: i32 = 40;
@@ -64,6 +64,7 @@ pub struct Editor {
 	total_steps: usize,
 	popup: EndPopup,
 	score: Option<Score>,
+	tooltip: Tooltip,
 
 	blueprints: Vec<Blueprint>,
 	selected_blueprint: usize,
@@ -176,6 +177,7 @@ impl Editor {
 			draw_overlay: true,
 			undo_history: Vec::new(),
 			undo_index: 0,
+			tooltip: Tooltip::default(),
 		}
 	}
 
@@ -567,6 +569,8 @@ impl Editor {
 			}
 		}
 
+		self.tooltip.init_frame(d);
+
 		self.draw_board(d, textures);
 		self.board_overlay(d, textures);
 		self.draw_bottom_bar(d, textures);
@@ -593,6 +597,7 @@ impl Editor {
 				.enumerate()
 			{
 				let i = i + self.blueprint_scroll;
+				self.tooltip.add(5, y, 32, 32, "Delete");
 				if simple_button(d, 5, y, 32, 32) {
 					b.remove_file();
 					self.blueprints.remove(i);
@@ -612,6 +617,7 @@ impl Editor {
 				if is_selected {
 					self.blueprint_name_selected = text_selected;
 				}
+				self.tooltip.add(42 + 205, y, 32, 32, "Select");
 				simple_option_button(d, 42 + 205, y, 32, 32, i, &mut self.selected_blueprint);
 
 				d.draw_texture_ex(
@@ -625,6 +631,8 @@ impl Editor {
 			}
 		}
 
+		self.tooltip.draw(d);
+
 		if matches!(self.popup, EndPopup::Success | EndPopup::Failure) {
 			let x = d.get_screen_width() / 2 - POPUP_WIDTH / 2;
 			let y = d.get_screen_height() / 2 - POPUP_HEIGHT / 2;
@@ -694,6 +702,7 @@ impl Editor {
 		}
 
 		if self.sim_state == SimState::Editing {
+			self.tooltip.add(150, 4, 32, 32, "Undo");
 			if simple_button(d, 150, 4, 32, 32) {
 				self.undo()
 			}
@@ -704,6 +713,7 @@ impl Editor {
 			};
 			draw_scaled_texture(d, textures.get(undo_icon), 150, 4, 2.);
 
+			self.tooltip.add(186, 4, 32, 32, "Redo");
 			if simple_button(d, 186, 4, 32, 32) {
 				self.redo()
 			}
@@ -715,48 +725,48 @@ impl Editor {
 			draw_scaled_texture(d, textures.get(redo_icon), 186, 4, 2.);
 		}
 		simple_toggle_button(d, &mut self.draw_overlay, 223, 4, 32, 32, 4);
+		self.tooltip.add(223, 4, 32, 32, "Toggle overlay");
 
-		match self.sim_state {
-			SimState::Editing => {
-				if simple_button(d, 260, 4, 32, 32) {
-					self.init_sim();
-					self.sim_state = SimState::Running;
-				}
-				draw_scaled_texture(d, textures.get("play"), 260, 4, 2.);
+		if self.sim_state == SimState::Running {
+			self.tooltip.add(260, 4, 32, 32, "Pause");
+			if simple_button(d, 260, 4, 32, 32) {
+				self.sim_state = SimState::Stepping;
 			}
-			SimState::Running => {
-				if simple_button(d, 260, 4, 32, 32) {
-					self.sim_state = SimState::Stepping;
+			draw_scaled_texture(d, textures.get("pause"), 260, 4, 2.);
+		} else {
+			self.tooltip.add(260, 4, 32, 32, "Start");
+			if simple_button(d, 260, 4, 32, 32) {
+				if self.sim_state == SimState::Editing {
+					self.init_sim()
 				}
-				draw_scaled_texture(d, textures.get("pause"), 260, 4, 2.);
-				if simple_button(d, 296, 4, 32, 32) {
-					self.sim_state = SimState::Editing;
-					self.popup = EndPopup::None;
-				}
-				draw_scaled_texture(d, textures.get("stop"), 296, 4, 2.);
-			}
-			SimState::Stepping => {
-				if simple_button(d, 260, 4, 32, 32) {
-					self.sim_state = SimState::Running;
-				}
-				draw_scaled_texture(d, textures.get("play"), 260, 4, 2.);
-				if simple_button(d, 296, 4, 32, 32) {
-					self.sim_state = SimState::Editing;
-					self.popup = EndPopup::None;
-				}
-				draw_scaled_texture(d, textures.get("stop"), 296, 4, 2.);
+				self.sim_state = SimState::Running;
 			}
+			draw_scaled_texture(d, textures.get("play"), 260, 4, 2.);
 		}
+
+		if self.sim_state != SimState::Editing {
+			self.tooltip.add(296, 4, 32, 32, "Stop");
+			if simple_button(d, 296, 4, 32, 32) {
+				self.sim_state = SimState::Editing;
+				self.popup = EndPopup::None;
+			}
+			draw_scaled_texture(d, textures.get("stop"), 296, 4, 2.);
+		}
+
+		self.tooltip.add(332, 4, 32, 32, "Step");
 		if simple_button(d, 332, 4, 32, 32) {
 			self.step_pressed();
 		}
 		draw_scaled_texture(d, textures.get("step"), 332, 4, 2.);
 
+		self.tooltip.add(368, 4, 48, 32, "Speed");
 		draw_usize(d, textures, 1 << self.sim_speed, 368, 4, SPEED_DIGITS, 1);
 		slider(d, &mut self.sim_speed, 0, MAX_SPEED_POWER, 368, 24, 48, 12);
 
+		self.tooltip.add(420, 4, 180, 32, "Steps");
 		draw_usize(d, textures, self.machine.step_count(), 420, 4, 9, 2);
 		if self.stage > Some(0) {
+			self.tooltip.add(420, 44, 180, 32, "Total steps");
 			let total_steps = self.total_steps + self.machine.step_count();
 			draw_usize(d, textures, total_steps, 420, 44, 9, 2);
 		}
@@ -875,50 +885,88 @@ impl Editor {
 		}
 
 		let mouse_pos = d.get_mouse_position();
-		let mut tool_button = |(row, col): (i32, i32), texture: &str, tool_option: Tool| {
-			let border = 4.;
-			let gap = 2.;
-			let tex_size = 32.;
-			let button_size = tex_size + border * 2.;
-			let grid_size = button_size + gap * 2.;
-			let pos = Vector2 {
-				x: 100. + col as f32 * grid_size - if col < 0 { 10. } else { 0. },
-				y: footer_top + 5. + row as f32 * grid_size,
+		let mut tool_button =
+			|(row, col): (i32, i32), texture: &str, tooltip: &'static str, tool_option: Tool| {
+				let border = 4.;
+				let gap = 2.;
+				let tex_size = 32.;
+				let button_size = tex_size + border * 2.;
+				let grid_size = button_size + gap * 2.;
+				let pos = Vector2 {
+					x: 100. + col as f32 * grid_size - if col < 0 { 10. } else { 0. },
+					y: footer_top + 5. + row as f32 * grid_size,
+				};
+				texture_option_button(
+					d,
+					pos,
+					textures.get(texture),
+					tool_option,
+					&mut self.active_tool,
+					tex_size,
+					border,
+				);
+				let bounds = Rectangle::new(pos.x, pos.y, button_size, button_size);
+				self.tooltip.add_rec(bounds, tooltip);
+				if bounds.check_collision_point_rec(mouse_pos) {
+					get_scroll(d)
+				} else {
+					None
+				}
 			};
-			texture_option_button(
-				d,
-				pos,
-				textures.get(texture),
-				tool_option,
-				&mut self.active_tool,
-				tex_size,
-				border,
-			);
-			let bounds = Rectangle::new(pos.x, pos.y, button_size, button_size);
-			if bounds.check_collision_point_rec(mouse_pos) {
-				get_scroll(d)
-			} else {
-				None
-			}
-		};
-		tool_button((0, -2), "eraser", Tool::Erase);
-		tool_button((1, -2), "selection", Tool::SelectArea(Selection::default()));
+		tool_button((0, -2), "eraser", "Eraser", Tool::Erase);
+		tool_button(
+			(1, -2),
+			"selection",
+			"Select",
+			Tool::SelectArea(Selection::default()),
+		);
 
-		tool_button((0, -1), "blueprint", Tool::Blueprint);
-		tool_button((1, -1), "transparent", Tool::None);
+		tool_button((0, -1), "blueprint", "Blueprints", Tool::Blueprint);
+		tool_button((1, -1), "transparent", "None", Tool::None);
 
 		if !hide_tile_tools {
-			tool_button((0, 0), "block", Tool::SetTile(Tile::from_char('#')));
-			tool_button((0, 1), "silo_off", Tool::SetTile(Tile::from_char('B')));
-			tool_button((0, 2), "button_off", Tool::SetTile(Tile::from_char('*')));
-			tool_button((0, 3), "io_tile_off", Tool::SetTile(Tile::from_char('I')));
-			tool_button((0, 4), "flipper_off", Tool::SetTile(Tile::from_char('F')));
-			tool_button((0, 5), "digit_tool", Tool::Digits(None));
+			tool_button(
+				(0, 0),
+				"block",
+				"Block",
+				Tool::SetTile(Tile::from_char('#')),
+			);
+			tool_button(
+				(0, 1),
+				"silo_off",
+				"Silo",
+				Tool::SetTile(Tile::from_char('B')),
+			);
+			tool_button(
+				(0, 2),
+				"button_off",
+				"Button",
+				Tool::SetTile(Tile::from_char('*')),
+			);
+			tool_button(
+				(0, 3),
+				"io_tile_off",
+				"Input/Output silo",
+				Tool::SetTile(Tile::from_char('I')),
+			);
+			tool_button(
+				(0, 4),
+				"flipper_off",
+				"Flipper",
+				Tool::SetTile(Tile::from_char('F')),
+			);
+			tool_button((0, 5), "digit_tool", "Digit", Tool::Digits(None));
 
-			tool_button((1, 0), "marble", Tool::SetTile(Tile::from_char('o')));
+			tool_button(
+				(1, 0),
+				"marble",
+				"Marble",
+				Tool::SetTile(Tile::from_char('o')),
+			);
 			match tool_button(
 				(1, 1),
-				Tile::Wire(self.tool_wire, false).texture(),
+				self.tool_wire.texture_name_off(),
+				self.tool_wire.human_name(),
 				Tool::Wire,
 			) {
 				Some(Scroll::Down) => self.tool_wire.next(),
@@ -926,14 +974,20 @@ impl Editor {
 				None => (),
 			}
 
-			match tool_button((1, 2), Tile::Arrow(self.tool_arrow).texture(), Tool::Arrow) {
+			match tool_button(
+				(1, 2),
+				self.tool_arrow.arrow_tile_texture_name(),
+				self.tool_arrow.arrow_tile_human_name(),
+				Tool::Arrow,
+			) {
 				Some(Scroll::Down) => self.tool_arrow = self.tool_arrow.right(),
 				Some(Scroll::Up) => self.tool_arrow = self.tool_arrow.left(),
 				None => (),
 			}
 			if tool_button(
 				(1, 3),
-				Tile::Mirror(self.tool_mirror).texture(),
+				self.tool_mirror.texture_name(),
+				self.tool_mirror.human_name(),
 				Tool::Mirror,
 			)
 			.is_some()
@@ -942,7 +996,8 @@ impl Editor {
 			}
 			match tool_button(
 				(1, 4),
-				Tile::Powerable(PTile::Math(self.tool_math), false).texture(),
+				self.tool_math.texture_name_off(),
+				self.tool_math.human_name(),
 				Tool::Math,
 			) {
 				Some(Scroll::Down) => self.tool_math.next(),
@@ -951,7 +1006,8 @@ impl Editor {
 			}
 			match tool_button(
 				(1, 5),
-				Tile::Powerable(PTile::Comparator(self.tool_comparator), false).texture(),
+				self.tool_comparator.texture_name_off(),
+				self.tool_comparator.human_name(),
 				Tool::Comparator,
 			) {
 				Some(Scroll::Down) => self.tool_comparator.next(),
diff --git a/src/marble_engine/tile.rs b/src/marble_engine/tile.rs
index 3619c19..8fc0809 100644
--- a/src/marble_engine/tile.rs
+++ b/src/marble_engine/tile.rs
@@ -270,6 +270,15 @@ impl Direction {
 		}
 	}
 
+	pub const fn arrow_tile_human_name(self) -> &'static str {
+		match self {
+			Direction::Up => "Up Arrow",
+			Direction::Down => "Down Arrow",
+			Direction::Left => "Left Arrow",
+			Direction::Right => "Right Arrow",
+		}
+	}
+
 	pub const fn arrow_texture_name(self) -> &'static str {
 		match self {
 			Direction::Up => "direction_up",
@@ -320,6 +329,7 @@ impl WireType {
 			WireType::Cross => "wire_cross_on",
 		}
 	}
+
 	pub const fn texture_name_off(self) -> &'static str {
 		match self {
 			WireType::Vertical => "wire_vertical_off",
@@ -327,6 +337,14 @@ impl WireType {
 			WireType::Cross => "wire_cross_off",
 		}
 	}
+
+	pub const fn human_name(self) -> &'static str {
+		match self {
+			WireType::Vertical => "Vertical Wire",
+			WireType::Horizontal => "Horizontal Wire",
+			WireType::Cross => "Wire Cross",
+		}
+	}
 }
 
 impl MirrorType {
@@ -360,9 +378,26 @@ impl MirrorType {
 			MirrorType::Back => "mirror_back",
 		}
 	}
+
+	pub const fn human_name(self) -> &'static str {
+		match self {
+			MirrorType::Forward => "Mirror A",
+			MirrorType::Back => "Mirror B",
+		}
+	}
 }
 
 impl MathOp {
+	pub const fn human_name(self) -> &'static str {
+		match self {
+			MathOp::Add => "Math: Add",
+			MathOp::Sub => "Math: Subtract",
+			MathOp::Mul => "Math: Multiply",
+			MathOp::Div => "Math: Divide",
+			MathOp::Rem => "Math: Remainder",
+		}
+	}
+
 	pub const fn texture_name_on(self) -> &'static str {
 		match self {
 			MathOp::Add => "add_on",
@@ -372,6 +407,7 @@ impl MathOp {
 			MathOp::Rem => "rem_on",
 		}
 	}
+
 	pub const fn texture_name_off(self) -> &'static str {
 		match self {
 			MathOp::Add => "add_off",
@@ -404,6 +440,15 @@ impl MathOp {
 }
 
 impl Comparison {
+	pub const fn human_name(self) -> &'static str {
+		match self {
+			Comparison::LessThan => "Comparator: Less than",
+			Comparison::GreaterThan => "Comparator: Greater than",
+			Comparison::Equal => "Comparator: Equal",
+			Comparison::NotEqual => "Comparator: Not Equal",
+		}
+	}
+
 	pub const fn texture_name_on(self) -> &'static str {
 		match self {
 			Comparison::LessThan => "lt_on",
@@ -412,6 +457,7 @@ impl Comparison {
 			Comparison::NotEqual => "neq_on",
 		}
 	}
+
 	pub const fn texture_name_off(self) -> &'static str {
 		match self {
 			Comparison::LessThan => "lt_off",
diff --git a/src/util.rs b/src/util.rs
index 4a9ac2d..08f2ea7 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -44,6 +44,70 @@ pub fn simple_button(d: &mut RaylibDrawHandle, x: i32, y: i32, width: i32, heigh
 	pressed
 }
 
+#[derive(Debug, Default)]
+pub struct Tooltip {
+	text: Option<&'static str>,
+	mouse_x: i32,
+	mouse_y: i32,
+	screen_width: i32,
+	screen_height: i32,
+}
+
+impl Tooltip {
+	pub fn init_frame(&mut self, d: &mut RaylibDrawHandle) {
+		let p = d.get_mouse_position();
+		*self = Self {
+			text: None,
+			mouse_x: p.x as i32,
+			mouse_y: p.y as i32,
+			screen_width: d.get_screen_width(),
+			screen_height: d.get_screen_height(),
+		};
+	}
+
+	pub fn add(&mut self, x: i32, y: i32, width: i32, height: i32, text: &'static str) {
+		if self.mouse_x >= x
+			&& self.mouse_y >= y
+			&& self.mouse_x <= (x + width)
+			&& self.mouse_y <= (y + height)
+		{
+			self.text = Some(text);
+		}
+	}
+
+	pub fn add_rec(&mut self, bounds: Rectangle, text: &'static str) {
+		self.add(
+			bounds.x as i32,
+			bounds.y as i32,
+			bounds.width as i32,
+			bounds.height as i32,
+			text,
+		);
+	}
+
+	pub fn draw(&self, d: &mut RaylibDrawHandle) {
+		if let Some(text) = self.text {
+			let font_size = 20;
+			let margin = 4;
+			let text_width = d.measure_text(text, font_size);
+			let x = self
+				.mouse_x
+				.min(self.screen_width - text_width - margin * 2);
+			let y = self
+				.mouse_y
+				.min(self.screen_height - font_size - margin * 2);
+			d.draw_rectangle(
+				x,
+				y,
+				text_width + margin * 2,
+				font_size + margin * 2,
+				BG_LIGHT,
+			);
+			d.draw_text(text, x + margin, y + margin, font_size, Color::WHITE);
+		}
+	}
+}
+
 pub fn simple_toggle_button(
 	d: &mut RaylibDrawHandle,
 	state: &mut bool,