diff --git a/src/constants.rs b/src/constants.rs
index 9a4bc16..c465116 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -73,7 +73,8 @@ pub fn get_room_type_per_level() -> Vec<HashMap<RoomType, std::ops::RangeInclusi
     let tmp = [
         // level 1
         vec![
-            (RoomType::EmptyRoom, 75),
+            (RoomType::EmptyRoom, 50),
+            (RoomType::ArtifactRoom, 25),
             (RoomType::MonsterRoom, 5),
             (RoomType::BasicRoom, 20),
         ],
diff --git a/src/level.rs b/src/level.rs
index 738755f..b2b03f0 100644
--- a/src/level.rs
+++ b/src/level.rs
@@ -57,6 +57,7 @@ impl Level {
             return (None, None, None);
         }
         if !self.discovered[x][y] {
+            #[cfg(test)]
             return (Some(StructureElement::Unknown), None, None);
         }
         let search_pos = &Position::new(self.level, x, y);
diff --git a/src/level_generator.rs b/src/level_generator.rs
index 15715e9..8c99551 100644
--- a/src/level_generator.rs
+++ b/src/level_generator.rs
@@ -2,15 +2,19 @@ use petgraph::algo::min_spanning_tree;
 use petgraph::data::*;
 use petgraph::graph::Graph;
 use petgraph::graph::UnGraph;
-use std::cmp::max;
-use std::cmp::min;
-use std::ops::Range;
 
 use rand::Rng;
 use rand::{rngs::ThreadRng, seq::SliceRandom};
 
+use crate::artifacts::Artifact;
+use crate::artifacts::Chest;
+use crate::artifacts::Potion;
+use crate::constants::get_monsters_per_level;
 use crate::constants::ROOM_HEIGHT;
 use crate::constants::ROOM_WIDTH;
+use crate::monster::create_monster_by_type;
+use crate::monster::Monster;
+use crate::position::Position;
 use crate::room::Connection;
 use crate::{
     constants::{
@@ -23,6 +27,7 @@ use crate::{
 pub struct LevelGenerator {
     level: usize,
     rooms: [[Room; ROOMS_VERTICAL]; ROOMS_HORIZONAL],
+    rng: ThreadRng,
 }
 enum Direction {
     Horizontal,
@@ -103,7 +108,7 @@ impl LevelGenerator {
             }
         }
 
-
+        // debug print a text view of the dungeon
         println!("  0 1 2 3 4 5 6 7");
         for r in 0..ROOMS_VERTICAL {
             print!("{} ", r);
@@ -174,20 +179,20 @@ impl LevelGenerator {
 
             if src_node_col == tgt_node_col {
                 // println!("Down");
-                let start_col = src_node_col * ROOM_WIDTH+ROOM_WIDTH/2;
-                let start_row = src_node_row * ROOM_HEIGHT+ROOM_HEIGHT;
-                let end_col = tgt_node_col * ROOM_WIDTH+ROOM_WIDTH/2;
-                 let end_row = tgt_node_row * ROOM_HEIGHT;
+                let start_col = src_node_col * ROOM_WIDTH + ROOM_WIDTH / 2;
+                let start_row = src_node_row * ROOM_HEIGHT + ROOM_HEIGHT;
+                let end_col = tgt_node_col * ROOM_WIDTH + ROOM_WIDTH / 2;
+                let end_row = tgt_node_row * ROOM_HEIGHT;
                 rooms[src_node_col][src_node_row].connection_down = Some(Connection {
                     start_pos: (start_col, start_row),
                     end_pos: (end_col, end_row),
                 });
             } else {
                 // println!("Right");
-                let start_col = src_node_col * ROOM_WIDTH+ROOM_WIDTH;
-                let start_row = src_node_row * ROOM_HEIGHT+ROOM_HEIGHT/2;
+                let start_col = src_node_col * ROOM_WIDTH + ROOM_WIDTH;
+                let start_row = src_node_row * ROOM_HEIGHT + ROOM_HEIGHT / 2;
                 let end_col = tgt_node_col * ROOM_WIDTH;
-                 let end_row = tgt_node_row * ROOM_HEIGHT+ROOM_HEIGHT/2;
+                let end_row = tgt_node_row * ROOM_HEIGHT + ROOM_HEIGHT / 2;
                 rooms[src_node_col][src_node_row].connection_right = Some(Connection {
                     start_pos: (start_col, start_row),
                     end_pos: (end_col, end_row),
@@ -195,7 +200,26 @@ impl LevelGenerator {
             }
         }
 
-        LevelGenerator { level, rooms }
+        LevelGenerator {
+            level,
+            rooms,
+            rng,
+        }
+    }
+
+    fn select_monster(position: Position, rng: &mut ThreadRng) -> Box<dyn Monster> {
+        let level = position.get_level();
+        let value = rng.gen_range(1..=100);
+
+        let t = get_monsters_per_level();
+        if level < t.len() {
+            for (mtype, range) in &t[level] {
+                if range.contains(&value) {
+                    return create_monster_by_type(mtype, position);
+                }
+            }
+        }
+        panic!("no monster selectable!");
     }
 
     fn select_room_type(level: usize, rng: &mut ThreadRng) -> RoomType {
@@ -216,18 +240,37 @@ impl LevelGenerator {
         let mut structure = [[StructureElement::Wall; LEVEL_HEIGHT]; LEVEL_WIDTH];
         let mut start_pos = (0, 0);
         let mut end_pos = (0, 0);
+        let mut monsters: Vec<Box<dyn Monster>> = Vec::with_capacity(10);
+        let mut artifacts: Vec<Box<dyn Artifact>> = Vec::with_capacity(10);
         for col in 0..ROOMS_HORIZONAL {
             for row in 0..ROOMS_VERTICAL {
-                let position = self.rooms[col][row].render(&mut structure, col, row);
-                if self.rooms[col][row].kind == RoomType::Start
-                    || self.rooms[col][row].kind == RoomType::StairUp
-                {
-                    start_pos = position;
-                }
-                if self.rooms[col][row].kind == RoomType::End
-                    || self.rooms[col][row].kind == RoomType::StairDown
-                {
-                    end_pos = position;
+                let room = self.rooms[col][row];
+                let position = room.render(&mut structure, col, row);
+                match room.kind {
+                    RoomType::Start => {start_pos=position},
+                    RoomType::End => {end_pos=position},
+                    RoomType::StairUp => {start_pos=position},
+                    RoomType::StairDown => {end_pos=position},
+                    RoomType::BasicRoom => {},
+                    RoomType::ArtifactRoom => {
+                        match self.rng.gen_range(1..=100) {
+                            1..=50 => {
+                                artifacts
+                                    .push(Box::new(Chest::new(Position::new(self.level, position.0, position.1))));
+                            }
+                            _ => {
+                                artifacts
+                                    .push(Box::new(Potion::new(Position::new(self.level, position.0, position.1))));
+                            }
+                        };
+                    },
+                    RoomType::MonsterRoom => {
+                        monsters.push(LevelGenerator::select_monster(
+                            Position::new(self.level, position.0, position.1),
+                            &mut self.rng,
+                        ));
+                    },
+                    RoomType::EmptyRoom => {},
                 }
             }
         }
@@ -247,8 +290,8 @@ impl LevelGenerator {
             level: self.level,
             structure,
             discovered: [[false; LEVEL_HEIGHT]; LEVEL_WIDTH],
-            monsters: vec![],
-            artifacts: vec![],
+            monsters,
+            artifacts,
             start: start_pos,
             end: end_pos,
             rng: rand::thread_rng(),
diff --git a/src/level_widget.rs b/src/level_widget.rs
index 9204fa3..676e74d 100644
--- a/src/level_widget.rs
+++ b/src/level_widget.rs
@@ -1,6 +1,6 @@
 use ratatui::buffer::Buffer;
 use ratatui::layout::Rect;
-use ratatui::style::Color;
+use ratatui::style::{Color, Modifier, Style};
 use ratatui::widgets::{StatefulWidget, Widget};
 
 use crate::game::Game;
@@ -15,6 +15,9 @@ impl LevelWidget {
     fn set_cell(&self, buf: &mut Buffer, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
         buf[(x, y)].set_symbol(symbol).set_bg(bg).set_fg(fg);
     }
+    fn set_bold_cell(&self, buf: &mut Buffer, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
+        buf[(x, y)].set_symbol(symbol).set_bg(bg).set_fg(fg).set_style(Style::new().add_modifier(Modifier::BOLD));
+    }
 }
 
 impl StatefulWidget for LevelWidget {
@@ -46,7 +49,7 @@ impl StatefulWidget for LevelWidget {
                                 }
                                 StructureElement::Wall => {
                                     // TODO add fancy walls with https://en.wikipedia.org/wiki/Box-drawing_characters
-                                    self.set_cell(buf, x, y, "#", FG_BROWN, Color::Gray);
+                                    self.set_cell(buf, x, y, "#", FG_BROWN, FG_BROWN);
                                 }
                                 StructureElement::Floor => {
                                     self.set_cell(buf, x, y, " ", FG_BROWN, Color::Gray);
@@ -68,7 +71,7 @@ impl StatefulWidget for LevelWidget {
                         }
                         (_, _, Some(t)) => {
                             let (s, c) = t.get_representation();
-                            self.set_cell(buf, x, y, s, c, Color::Gray);
+                            self.set_bold_cell(buf, x, y, s, c, Color::Gray);
                         }
                         (None, None, None) => {}
                     };
diff --git a/src/room.rs b/src/room.rs
index 231248e..e7ee3cc 100644
--- a/src/room.rs
+++ b/src/room.rs
@@ -119,25 +119,19 @@ impl Room {
         match self.kind {
             RoomType::Start => {
                 tgt[left + self.special.0][top + self.special.1] = StructureElement::Start;
-                (left + self.special.0, top + self.special.1)
             }
             RoomType::End => {
                 tgt[left + self.special.0][top + self.special.1] = StructureElement::End;
-                (left + self.special.0, top + self.special.1)
             }
             RoomType::StairUp => {
                 tgt[left + self.special.0][top + self.special.1] = StructureElement::StairUp;
-                (left + self.special.0, top + self.special.1)
             }
             RoomType::StairDown => {
                 tgt[left + self.special.0][top + self.special.1] = StructureElement::StairDown;
-                (left + self.special.0, top + self.special.1)
             }
-            RoomType::BasicRoom => (0, 0),
-            RoomType::ArtifactRoom => (0, 0),
-            RoomType::MonsterRoom => (0, 0),
-            RoomType::EmptyRoom => (0, 0),
-        }
+            _ => {}
+        };
+        (left + self.special.0, top + self.special.1)
     }
 }