diff --git a/src/es03_game.rs b/src/es03_game.rs
new file mode 100644
index 0000000..063ae7d
--- /dev/null
+++ b/src/es03_game.rs
@@ -0,0 +1,42 @@
+#![allow(unused)]
+
+/** Es.3
+ * Implementare una libreria che permetta di realizzare il seguente gioco.
+ * Il Campo di gioco e' una matrice n x n di celle le celle sui 4 lati sono dei muri e all'interno le celle possono essere
+ * - vuote
+ * - contenere cibo (un intero positivo)
+ * - contenere un veleno (un intero positivo)
+ *
+ * Un Giocatore si muove in questa matrice iniziando da una posizione casuale. Il giocatore ha
+ * - Direzione in cui si muove: Su, Giu', Destra, Sinistra
+ * - Posizione nella matrice
+ * - una forza (un intero positivo)
+ *
+ * Quando si muove avanza di una posizione nella direzione in cui il giocatore si muove. Una Configurazione e'
+ * un campo di gioco, e un giocatore in una posizione del campo per questa struttura implementate il trait Display
+ *
+ * Il gioco inizia con una configurazione in cui nella matrice ci sono m caselle con cibo e m con veleno (in posizioni casuali), un giocatore in una cella libera e un numero massimo di mosse.
+ * Ad ogni iterazione: Si lancia una moneta (Testa o Croce) se
+ * - Testa il giocatore si muove di una posizione nella direzione in cui si sta muovendo
+ * - altrimenti sceglie casualmente una dell 4 direzioni e fa un passo in quella direzione.
+ *
+ * Se la cella in cui si finisce
+ * contiene cibo, si aggiunge la quantita' di cibo alla forza
+ * contiene veleno, si decrementa la quantita' di veleno dalla forza
+ * e' un muro il giocatore rimbalza, cioe' resta nella stessa posizione ma cambia la sua direzione nella direzione opposta.
+ *
+ * Il gioco finisce quando
+ * - il giocatore finisce la forza (cioe' questa diventerebbe un valore <=0) e in questo caso PERDE
+ * - raggiunge il numero massimo di mosse nel qual caso VINCE
+ *
+ * Per n, m, le quantità iniziali dei vari elementi (elemento, cibo, forza) e il numero massimo di mosse usate variabili  che possano essere inserite dall'utente.
+ * Se volete potete anche cambiare le regole del gioco.
+ * Mettere main e definizioni in files separati (le definizioni in uno o più files) e scrivete i test in una directory a parte.
+ */
+
+pub mod floor;
+pub mod game;
+pub mod generator;
+pub mod cell;
+pub mod config;
+pub mod entities;
diff --git a/src/es03_game/cell.rs b/src/es03_game/cell.rs
new file mode 100644
index 0000000..578e553
--- /dev/null
+++ b/src/es03_game/cell.rs
@@ -0,0 +1,52 @@
+use rand::Rng;
+use serde::{Deserialize, Serialize};
+
+use super::{entities::{Direction, Entity}, game::Rogue};
+
+#[derive(Clone, Copy, Deserialize, Serialize)]
+pub enum Cell {
+    Staricase,
+    Special(Effect),
+    Wall,
+    Empty,
+}
+
+#[derive(Clone, Copy, Serialize, Deserialize)]
+pub enum Effect {
+    InstantDamage(i8),
+    TurnBasedDamage(u8, i8),
+    //DeBuff(i8, i8),
+    Confusion(u8),
+    //Custom(i16),
+}
+
+const DELTA: i32 = 5;
+impl Effect {
+    pub fn effect(&self, game: &mut Rogue, entity: &mut Entity) {
+        let floor = game.current_floor();
+        let rng = floor.get_rng();
+
+        match *self {
+            Effect::InstantDamage(damage) => {
+                let damage = damage as i32;
+                let damage = damage + rng.gen_range(-DELTA..DELTA);
+                entity.health += damage;
+            }
+            Effect::Confusion(time) => {
+                if time > 0 {
+                    entity.add_effect(Effect::Confusion(time - 1));
+                    let coin_flip = rng.gen_range(0..=1);
+                    if coin_flip == 1 {
+                        let random_direction = Direction::generate_random(rng);
+                        entity.direction = random_direction;
+                    }
+                }
+            }
+            _ => todo!()
+        }
+    }
+}
+
+pub const POISON: Effect = Effect::InstantDamage(20);
+pub const FOOD: Effect = Effect::InstantDamage(-20);
+pub const CONFUSION: Effect = Effect::Confusion(u8::MAX);
diff --git a/src/es03_game/config.rs b/src/es03_game/config.rs
new file mode 100644
index 0000000..efc7111
--- /dev/null
+++ b/src/es03_game/config.rs
@@ -0,0 +1,35 @@
+
+use super::cell::{self, Effect};
+use serde::{Deserialize, Serialize};
+
+/**
+ * Struttura Config usata per definire il gioco, ha alcune cose utili
+ * TODO sarebbe bello poterle prendere da file.
+ */
+
+#[derive(Clone, Deserialize, Serialize)]
+pub struct Config {
+    pub game_seed: u64,
+    pub floor_size_range: (usize, usize),
+    pub effects: Vec<ConfigEffect>,
+    pub effects_total: usize,
+}
+
+#[derive(Clone, Copy, Deserialize, Serialize)]
+pub struct ConfigEffect {
+    pub effect: Effect,
+    pub first_floor: usize,
+    pub last_floor: usize,
+    pub priority: usize,
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            game_seed: 0,
+            floor_size_range: (20, 30),
+            effects: vec![ConfigEffect { effect: cell::POISON, first_floor: 0, last_floor: 255, priority: 1 }],
+            effects_total: 45,
+        }
+    }
+}
diff --git a/src/es03_game/entities.rs b/src/es03_game/entities.rs
new file mode 100644
index 0000000..45e8bc3
--- /dev/null
+++ b/src/es03_game/entities.rs
@@ -0,0 +1,143 @@
+use std::{collections::VecDeque, fmt::Display};
+
+use rand::Rng;
+use rand_pcg::Pcg32;
+use serde::{Deserialize, Serialize};
+
+use super::{
+    cell::{Cell, Effect},
+    game::Rogue,
+};
+
+#[derive(Clone, Copy, Deserialize, Serialize)]
+pub enum Direction {
+    UP,
+    DOWN,
+    LEFT,
+    RIGHT,
+    NONE,
+}
+
+impl Direction {
+    pub fn invert(&self) -> Self {
+        match *self {
+            Direction::UP => Direction::DOWN,
+            Direction::DOWN => Direction::UP,
+            Direction::RIGHT => Direction::LEFT,
+            Direction::LEFT => Direction::RIGHT,
+            _ => Direction::NONE,
+        }
+    }
+    pub fn move_from(&self, pos: (usize, usize)) -> (usize, usize) {
+        match *self {
+            Direction::UP => (pos.0, pos.1 + 1),
+            Direction::DOWN => (pos.0, pos.1 - 1),
+            Direction::RIGHT => (pos.0 + 1, pos.1),
+            Direction::LEFT => (pos.0 - 1, pos.1),
+            Direction::NONE => (pos.0, pos.1),
+        }
+    }
+    pub fn generate_random(rng: &mut Pcg32) -> Self {
+        match rng.gen_range(0..4) {
+            0 => Direction::UP,
+            1 => Direction::DOWN,
+            2 => Direction::LEFT,
+            _ => Direction::RIGHT,
+        }
+    }
+}
+
+impl Display for Direction {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let c = match self {
+            Self::UP => '▲',
+            Self::DOWN => '▼',
+            Self::LEFT => '◄',
+            Self::RIGHT => '►',
+            Self::NONE => '■',
+        };
+
+        write!(f, "{}", c)
+    }
+}
+
+#[derive(Clone, Copy, Deserialize, Serialize)]
+pub enum Action {
+    Move(Direction),
+    // attack
+    DoNothing,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct Entity {
+    name: String,
+    floor: usize,
+    effected_by: VecDeque<Effect>,
+    player: bool,
+    pub position: (usize, usize),
+    pub direction: Direction,
+    pub health: i32,
+    pub attack: i32,
+}
+
+impl Entity {
+    pub fn new(name: String) -> Self {
+        Self {
+            name,
+            floor: 0,
+            effected_by: VecDeque::new(),
+            position: (0, 0),
+            player: false,
+            direction: Direction::UP,
+            attack: 100,
+            health: 100,
+        }
+    }
+    pub fn new_player(name: String) -> Self {
+        let mut player = Self::new(name);
+        player.player = true;
+        player
+    }
+    pub fn add_effect(&mut self, effect: Effect) {
+        self.effected_by.push_back(effect);
+    }
+    pub fn compute_effects(&mut self, game: &mut Rogue) {
+        let total = self.effected_by.len(); // len could change
+        for _ in 0..total {
+            if let Some(effect) = self.effected_by.pop_front() {
+                effect.effect(game, self);
+            }
+        }
+    }
+    pub fn do_action(&mut self, game: &mut Rogue, action: Action) {
+        match action {
+            Action::Move(direction) => {
+                self.direction = direction;
+                self.do_action_move(game);
+            }
+            _ => todo!(),
+        }
+    }
+
+    fn do_action_move(&mut self, game: &mut Rogue) {
+        let direction = self.direction;
+        let pos = direction.move_from(self.position);
+        let floor = game.current_floor();
+
+        match floor.get_cell(pos) {
+            Cell::Empty => {
+                self.position = pos;
+            }
+            Cell::Special(effect) => {
+                self.position = pos;
+                self.add_effect(effect)
+            }
+            Cell::Staricase => {
+                if self.player {
+                    game.build_new_floor()
+                }
+            }
+            Cell::Wall => self.direction = direction.invert(),
+        }
+    }
+}
diff --git a/src/es03_game/floor.rs b/src/es03_game/floor.rs
new file mode 100644
index 0000000..6727ced
--- /dev/null
+++ b/src/es03_game/floor.rs
@@ -0,0 +1,42 @@
+use rand_pcg::Pcg32;
+use serde::{Deserialize, Serialize};
+
+use super::cell::Cell;
+use super::entities::Entity;
+use super::game::Rogue;
+use super::generator::Generator;
+
+#[derive(Deserialize, Serialize)]
+pub struct Floor {
+    level: usize,
+    grid: Vec<Vec<Cell>>,
+    entities: Vec<Entity>,
+    rng: Pcg32,
+}
+
+impl Floor {
+    pub fn new(generator: Generator) -> Self {
+        Self {
+            entities: vec![],
+            level: generator.level,
+            grid: generator.build_empty_matrix(),
+            rng: generator.rng,
+        }
+    }
+    pub fn get_rng(&mut self) -> &mut Pcg32 {
+        &mut self.rng
+    }
+    pub fn get_level(&self) -> usize {
+        self.level
+    }
+    pub fn get_cell(&self, pos: (usize, usize)) -> Cell {
+        self.grid[pos.0][pos.1]
+    }
+
+    pub fn compute_entities(&mut self, game: &mut Rogue) {
+        for entity in &mut self.entities {
+            entity.compute_effects(game);
+            entity.do_action(game, game.input_action(entity));
+        }
+    }
+}
diff --git a/src/es03_game/game.rs b/src/es03_game/game.rs
new file mode 100644
index 0000000..5c8f56d
--- /dev/null
+++ b/src/es03_game/game.rs
@@ -0,0 +1,53 @@
+use std::fmt::Display;
+
+use rand::{RngCore, SeedableRng};
+use rand_pcg::Pcg32;
+use serde::{Deserialize, Serialize};
+
+use super::{config::Config, entities::{Action, Entity}, floor::Floor, generator::Generator};
+
+/**
+ * Struttura del gioco generico che implementa un RogueLike.
+ */
+#[derive(Deserialize, Serialize)]
+pub struct Rogue {
+    floor: Floor,
+    rng: Pcg32,
+    config: Config,
+}
+
+impl Display for Rogue {
+    fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        todo!()
+    }
+}
+
+impl Rogue {
+    pub fn new() -> Self {
+        let config = Config::default();
+        let mut rng = Pcg32::seed_from_u64(config.game_seed);
+        let floor = Floor::new(Generator::new(rng.next_u64(), 0, &config));
+
+        Self { rng, config, floor }
+    }
+
+    pub fn current_floor(&mut self) -> &mut Floor {
+        &mut self.floor
+    }
+
+    pub fn build_new_floor(&mut self) {
+        let level = self.floor.get_level();
+        let floor_seed = self.rng.next_u64();
+
+        let generator = Generator::new(floor_seed, level + 1, &self.config);
+        self.floor = Floor::new(generator);
+    }
+
+    pub fn input_action(&self, entity: &Entity) -> Action {
+        todo!()
+    }
+
+    pub fn compute_turn(&mut self) {
+        todo!();
+    }
+}
diff --git a/src/es03_game/generator.rs b/src/es03_game/generator.rs
new file mode 100644
index 0000000..8df09bf
--- /dev/null
+++ b/src/es03_game/generator.rs
@@ -0,0 +1,61 @@
+use rand::Rng;
+use rand::SeedableRng;
+use rand_pcg::Pcg32;
+
+use super::cell::Cell;
+
+use super::config::Config;
+use super::config::ConfigEffect;
+
+pub struct Generator<'a> {
+    pub rng: Pcg32,
+    pub level: usize,
+    size: usize,
+    effects: Vec<&'a ConfigEffect>,
+    effects_total: usize,
+    // enemies vec configuration?
+}
+
+impl<'a> Generator<'a> {
+    pub fn new(floor_seed: u64, floor_level: usize, config: &'a Config) -> Self {
+        let mut rand_pcg = Pcg32::seed_from_u64(floor_seed);
+        let range = config.floor_size_range.0..config.floor_size_range.1;
+        let floor_size = rand_pcg.gen_range(range);
+
+        let effects_list = &config.effects;
+        let effects_list = effects_list.into_iter();
+        let effects_list = effects_list.filter_map(|val| {
+            if floor_level >= val.first_floor && floor_level <= val.last_floor {
+                Some(val)
+            } else {
+                None
+            }
+        });
+        let effects_list = effects_list.collect();
+
+        Self {
+            rng: rand_pcg,
+            level: floor_level,
+            size: floor_size,
+            effects_total: config.effects_total,
+            effects: effects_list,
+        }
+    }
+
+    pub fn build_empty_matrix(&self) -> Vec<Vec<Cell>> {
+        self.build_matrix_with(Cell::Empty)
+    }
+    pub fn build_labyrinth(&mut self) -> Vec<Vec<Cell>> {
+        todo!()
+    }
+    pub fn build_rooms(&mut self) -> Vec<Vec<Cell>> {
+        todo!()
+    }
+
+    fn place_staircase(&mut self, grid: Vec<Vec<Cell>>) -> Vec<Vec<Cell>> {
+        todo!()
+    }
+    fn build_matrix_with(&self, cell: Cell) -> Vec<Vec<Cell>> {
+        vec![vec![cell; self.size]; self.size]
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 1cdcdf3..20f83b2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,3 @@
 pub mod es01_anagram;
 pub mod es02_rational;
+pub mod es03_game;