diff --git a/clients/leptos/src/components/browser/create_game.rs b/clients/leptos/src/components/browser/create_game.rs
index 43402c1..0d37321 100644
--- a/clients/leptos/src/components/browser/create_game.rs
+++ b/clients/leptos/src/components/browser/create_game.rs
@@ -46,8 +46,8 @@ pub fn CreateGame() -> impl IntoView {
     let request_new_game = move |_| {
         set_websocket_send(
             to_string(&NewGameRequest {
-                name: input_game_name(),
-                packs: selected_packs(),
+                game_name: input_game_name(),
+                game_packs: selected_packs().into_iter().collect::<Vec<String>>(),
             })
             .unwrap(),
         );
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 655a326..ad66e87 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -1,6 +1,5 @@
 use prost::Message;
 use serde::{Deserialize, Serialize};
-use std::collections::HashSet;
 
 /// Judge decision
 #[derive(Clone, Serialize, Deserialize, Message)]
@@ -110,78 +109,98 @@ pub struct GameStateMeta {
 }
 
 /// Game browser meta
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Message, Serialize, Deserialize)]
 pub struct GameBrowserMeta {
+    #[prost(string, tag = "1")]
     pub uuid: String,
+    #[prost(string, tag = "2")]
     pub name: String,
+    #[prost(string, tag = "3")]
     pub host: String,
-    pub players: usize,
+    #[prost(uint32, tag = "4")]
+    pub players: u32,
+    #[prost(bytes, tag = "5")]
     pub packs: Vec<u8>,
 }
 
 /// Card Pack Meta
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Message, Serialize, Deserialize)]
 pub struct CardPackMeta {
+    #[prost(string, tag = "1")]
     pub name: String,
+    #[prost(string, tag = "2")]
     pub pack: String,
-    pub num_white: usize,
-    pub num_black: usize,
+    #[prost(uint32, tag = "3")]
+    pub num_white: u32,
+    #[prost(uint32, tag = "4")]
+    pub num_black: u32,
 }
 
 /// Card Packs Meta
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Message, Serialize, Deserialize)]
 pub struct CardPacksMeta {
+    #[prost(message, repeated, tag = "1")]
     pub official_meta: Vec<CardPackMeta>,
+    #[prost(message, repeated, tag = "2")]
     pub unofficial_meta: Vec<CardPackMeta>,
 }
 
 /// Games update
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct GamesUpdate {
+    #[prost(message, repeated, tag = "1")]
     pub games: Vec<GameBrowserMeta>,
 }
 
 /// Chat update
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct ChatUpdate {
+    #[prost(string, tag = "1")]
     pub room: String,
+    #[prost(string, repeated, tag = "2")]
     pub users: Vec<String>,
 }
 
 /// User login request (to change name)
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct UserLogInRequest {
+    #[prost(string, tag = "1")]
     pub username: String,
 }
 
 /// Response to user name change containing new name
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct UserUpdate {
+    #[prost(string, tag = "1")]
     pub username: String,
 }
 
 /// Chat message
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct ChatMessage {
+    #[prost(string, tag = "1")]
     pub text: String,
 }
 
 /// Server user count
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct ServerOnlineUsers {
-    pub online_users: usize,
+    #[prost(uint32, tag = "1")]
+    pub online_users: u32,
 }
 
 /// Server games count
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct ServerActiveGames {
-    pub active_games: usize,
+    #[prost(uint32, tag = "1")]
+    pub active_games: u32,
 }
 
 /// New game request structure
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Message, Serialize, Deserialize)]
 pub struct NewGameRequest {
-    /// Game name
-    pub name: String,
-    pub packs: HashSet<String>,
+    #[prost(string, tag = "1")]
+    pub game_name: String,
+    #[prost(string, repeated, tag = "2")]
+    pub game_packs: Vec<String>,
 }
diff --git a/server/src/game_handler.rs b/server/src/game_handler.rs
index 13006ff..59c5ab5 100644
--- a/server/src/game_handler.rs
+++ b/server/src/game_handler.rs
@@ -310,10 +310,10 @@ impl GameHandler {
 
     /// Creates a new game
     async fn create_new_game(&mut self, new_game: NewGameRequest, addr: SocketAddr) {
-        if new_game.packs.is_empty() {
+        if new_game.game_packs.is_empty() {
             tracing::error!("New game cards are empty!");
             return;
-        } else if new_game.name.is_empty() {
+        } else if new_game.game_name.is_empty() {
             tracing::error!("New game name is empty!");
             return;
         }
@@ -322,10 +322,10 @@ impl GameHandler {
             let new_game_name;
             let max_game_name_len = 32;
 
-            if new_game.name.len() > max_game_name_len {
-                new_game_name = new_game.name[..max_game_name_len].to_string()
+            if new_game.game_name.len() > max_game_name_len {
+                new_game_name = new_game.game_name[..max_game_name_len].to_string()
             } else {
-                new_game_name = new_game.name
+                new_game_name = new_game.game_name
             }
 
             // Create manifest
@@ -333,7 +333,7 @@ impl GameHandler {
                 name: new_game_name,
                 host: host.clone(),
                 packs: new_game
-                    .packs
+                    .game_packs
                     .into_iter()
                     .map(|pack| u8::from_str_radix(&pack, 10).unwrap())
                     .collect(),
@@ -374,7 +374,7 @@ impl GameHandler {
                 uuid: game.uuid.to_string(),
                 name: game.name.clone(),
                 host: game.host.read().unwrap().name.clone(),
-                players: game.players.len(),
+                players: game.players.len().try_into().unwrap(),
                 packs: game.packs.clone(),
             })
             .collect::<Vec<GameBrowserMeta>>();
@@ -391,7 +391,7 @@ impl GameHandler {
     /// Broadcast updated game count
     fn broadcast_game_count(&self) {
         let tx = self.state.broadcast_tx.clone();
-        let active_games = self.games.len();
+        let active_games: u32 = self.games.len().try_into().unwrap();
         let msg = to_string(&ServerActiveGames { active_games }).unwrap();
         tokio::spawn(async move {
             if let Err(e) = tx.send(msg) {
diff --git a/server/src/lib.rs b/server/src/lib.rs
index cb59bfd..7619425 100644
--- a/server/src/lib.rs
+++ b/server/src/lib.rs
@@ -201,8 +201,8 @@ pub fn load_cards_from_json(
         let meta = CardPackMeta {
             name: sets.name,
             pack: pack.expect("No card pack number!").to_string(),
-            num_white,
-            num_black,
+            num_white: num_white.try_into().unwrap(),
+            num_black: num_black.try_into().unwrap(),
         };
 
         if sets.official {
diff --git a/server/src/user_handler.rs b/server/src/user_handler.rs
index 1ba5bf1..8bed24d 100644
--- a/server/src/user_handler.rs
+++ b/server/src/user_handler.rs
@@ -315,7 +315,14 @@ impl UserHandler {
     /// Broadcast updated user count
     fn broadcast_user_count(&self) {
         let tx = self.state.broadcast_tx.clone();
-        let online_users = self.state.online_users.read().unwrap().len();
+        let online_users: u32 = self
+            .state
+            .online_users
+            .read()
+            .unwrap()
+            .len()
+            .try_into()
+            .unwrap();
         let msg = to_string(&ServerOnlineUsers { online_users }).unwrap();
         tokio::spawn(async move { tx.send(msg) });
     }