diff --git a/.gitignore b/.gitignore
index ad67955..0728338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,8 @@ target
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+
+# Added by cargo
+
+/target
diff --git a/.idea/.gitignore b/.idea/.gitignore
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index 0000000..e69de29
diff --git a/.idea/connect4-moderator-server.iml b/.idea/connect4-moderator-server.iml
new file mode 100644
index 0000000..cf84ae4
--- /dev/null
+++ b/.idea/connect4-moderator-server.iml
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new file mode 100644
index 0000000..4ea72a9
--- /dev/null
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new file mode 100644
index 0000000..8648f94
--- /dev/null
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diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..6cad787
--- /dev/null
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new file mode 100644
index 0000000..35eb1dd
--- /dev/null
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@@ -0,0 +1,6 @@
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+  </component>
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index 0000000..f0c7be5
--- /dev/null
+++ b/.idea/workspace.xml
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+  </component>
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..963aa0c
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..24315a1
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "connect4-moderator-server"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+tokio = { version = "1.48", features = ["full"] }
+tokio-tungstenite = "0.28"
+futures-util = "0.3.31"
+serde = { version = "1.0.228", features = ["derive"] }
+serde_json = "1.0.145"
+tracing = "0.1.41"
+tracing-subscriber = "0.3.20"
+anyhow = "1.0.100"
\ No newline at end of file
diff --git a/README.md b/README.md
index 9a7c6fa..ac4a4f7 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-# connect4-moderator-server
\ No newline at end of file
+# Connect4 Moderator - Server
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..de0965c
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,123 @@
+mod types;
+
+use std::net::SocketAddr;
+use std::sync::Arc;
+use tokio::net::{TcpListener, TcpStream};
+use tokio::sync::RwLock;
+use tokio_tungstenite::{accept_async, tungstenite::Message};
+use futures_util::{SinkExt, StreamExt};
+use std::collections::HashMap;
+use tracing::{info, error, warn};
+use types::Client;
+use crate::types::{Color, Role, AI};
+
+type Clients = Arc<RwLock<HashMap<SocketAddr, Client>>>;
+
+#[tokio::main]
+async fn main() -> Result<(), anyhow::Error> {
+	// Initialize logging
+	tracing_subscriber::fmt::init();
+
+	let addr = "127.0.0.1:8080";
+	let listener = TcpListener::bind(&addr).await?;
+	info!("WebSocket server listening on: {}", addr);
+
+	let mut clients: Clients = Arc::new(RwLock::new(HashMap::new()));
+
+	while let Ok((stream, addr)) = listener.accept().await {
+		tokio::spawn(handle_connection(stream, addr, clients.clone()));
+	}
+
+	Ok(())
+}
+
+async fn handle_connection(
+	stream: TcpStream,
+	addr: SocketAddr,
+	clients: Clients,
+) -> Result<(), anyhow::Error> {
+	info!("New WebSocket connection from: {}", addr);
+
+	let ws_stream = accept_async(stream).await?;
+	let (mut ws_sender, mut ws_receiver) = ws_stream.split();
+	let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
+
+	// Store the client
+	{
+	  clients.write().await.insert(addr, Client::new(String::new(), Role::Observer, tx));
+	}
+
+	// Spawn task to handle outgoing messages
+	let mut send_task = tokio::spawn(async move {
+		while let Some(msg) = rx.recv().await {
+			if ws_sender.send(msg).await.is_err() {
+				break;
+			}
+		}
+	});
+
+	// Handle incoming messages
+	while let Some(msg) = ws_receiver.next().await {
+		match msg {
+			Ok(Message::Text(text)) => {
+				info!("Received text from {}: {}", addr, text);
+
+				if text.starts_with("CONNECT") {
+					let requested_username = text.split(":").collect::<Vec<&str>>()[1].to_string();
+					let mut is_taken = false;
+					for client in clients.read().await.values() {
+						if let Some(username) = &client.username {
+							if *username == requested_username {
+								is_taken = true;
+								break;
+							}
+						}
+					}
+
+					if is_taken {
+						let _ = clients.read().await.get(&addr).unwrap().send("ERROR:INVALID:ID:".to_string() + &*requested_username);
+						continue;
+					}
+
+					// not taken
+					clients.write().await.get_mut(&addr).unwrap().role = Role::Player;
+					clients.write().await.get_mut(&addr).unwrap().username = Some(requested_username);
+				}
+				else if text.starts_with("READY") {
+					// TODO!
+				}
+				else if text.starts_with("PLAY") {
+					// TODO!
+				}
+				else {
+					let _ = clients.read().await.get(&addr).unwrap().send("ERROR:UNKNOWN".to_string());
+				}
+			}
+			Ok(Message::Close(_)) => {
+				info!("Client {} disconnected", addr);
+				break;
+			}
+			Ok(_) => { let _ = clients.read().await.get(&addr).unwrap().send("ERROR:UNKNOWN".to_string()); }
+			Err(e) => {
+				error!("WebSocket error for {}: {}", addr, e);
+				break;
+			}
+		}
+	}
+
+	// Clean up
+	send_task.abort();
+	clients.write().await.remove(&addr);
+	info!("Client {} removed", addr);
+
+	Ok(())
+}
+
+async fn broadcast_message(clients: &Clients, msg: Message) {
+	let clients = clients.read().await;
+	for (_, client) in clients.iter() {
+		if client.role == Role::Admin || client.role == Role::Observer {
+			client.connection.send(msg.clone()).ok();
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/types.rs b/src/types.rs
new file mode 100644
index 0000000..30ca28b
--- /dev/null
+++ b/src/types.rs
@@ -0,0 +1,64 @@
+use tokio::sync::mpsc::error::SendError;
+use tokio::sync::mpsc::UnboundedSender;
+use tokio_tungstenite::tungstenite::Message;
+
+#[derive(PartialEq)]
+pub enum Role {
+    Admin,
+    Observer,
+    Player,
+}
+
+#[derive(PartialEq)]
+pub enum Color {
+	Red,
+	Blue,
+	None,
+}
+
+pub struct Client {
+    pub client_id: String,
+    pub role: Role,
+    pub connection: UnboundedSender<Message>,
+	pub username: Option<String>,
+}
+
+impl Client {
+	pub fn new(client_id: String, role: Role, connection: UnboundedSender<Message>) -> Client {
+		Client {
+			client_id,
+			role,
+			connection,
+			username: None,
+		}
+	}
+
+	pub fn send(&self, text: String) -> Result<(), SendError<Message>> {
+		self.connection.send(Message::text(text))
+	}
+}
+
+pub struct AI {
+	pub username: String,
+	pub color: Color,
+	pub ready: bool,
+}
+
+impl AI {
+	pub fn new(username: &str, color: Color) -> AI {
+		AI { username: username.to_string(), color, ready: false }
+	}
+}
+
+pub struct Match {
+	pub id: u32,
+	pub board: Vec<Vec<Color>>,
+	pub player1: AI,
+	pub player2: AI,
+}
+
+impl Match {
+	pub fn new(id: u32, player1: AI, player2: AI) -> Match {
+		Match { id, board: Vec::new(), player1, player2 }
+	}
+}