diff --git a/gameserver/.env b/gameserver/.env
new file mode 100644
index 0000000..bf40ee2
--- /dev/null
+++ b/gameserver/.env
@@ -0,0 +1 @@
+LINEUP=1309,1308,1307,1315
\ No newline at end of file
diff --git a/gameserver/Cargo.toml b/gameserver/Cargo.toml
index ab61073..df9b42d 100644
--- a/gameserver/Cargo.toml
+++ b/gameserver/Cargo.toml
@@ -7,6 +7,8 @@ version.workspace = true
 ansi_term.workspace = true
 anyhow.workspace = true
 atomic_refcell.workspace = true
+dirs.workspace = true
+dotenv.workspace = true
 env_logger.workspace = true
 hex.workspace = true
 lazy_static.workspace = true
diff --git a/gameserver/src/game/globals.rs b/gameserver/src/game/globals.rs
new file mode 100644
index 0000000..bf642a0
--- /dev/null
+++ b/gameserver/src/game/globals.rs
@@ -0,0 +1,16 @@
+use std::env;
+
+use lazy_static::lazy_static;
+
+lazy_static! {
+    pub static ref LINEUP: Vec<u32> = {
+        let lineup_str = env::var("LINEUP").expect("Missing .env parameter: LINEUP");
+        let mut lineup = Vec::new();
+
+        for s in lineup_str.trim().replace(" ", "").split(",") {
+            lineup.push(s.parse().unwrap());
+        }
+
+        lineup
+    };
+}
diff --git a/gameserver/src/game/mod.rs b/gameserver/src/game/mod.rs
new file mode 100644
index 0000000..068bedc
--- /dev/null
+++ b/gameserver/src/game/mod.rs
@@ -0,0 +1 @@
+pub mod globals;

diff --git a/gameserver/src/main.rs b/gameserver/src/main.rs
index 4e7e4c3..f361915 100644
--- a/gameserver/src/main.rs
+++ b/gameserver/src/main.rs
@@ -1,15 +1,42 @@
 use anyhow::Result;
 
+mod game;
 mod logging;
 mod net;
 mod util;
 
 use logging::init_tracing;
 
+const DEFAULT_DOTENV: &str = include_str!("../.env");
+
 #[tokio::main]
 async fn main() -> Result<()> {
     init_tracing();
+    init_config()?;
+
     net::gateway::listen("0.0.0.0", 23301).await?;
+    Ok(())
+}
+
+fn init_config() -> Result<()> {
+    let local_dotenv = std::path::Path::new(".env");
+    if local_dotenv.exists() {
+        dotenv::dotenv()?;
+    } else {
+        let config = dirs::config_dir()
+            .ok_or_else(|| anyhow::anyhow!("No config directory found"))?
+            .join("hkrpg-gameserver");
+
+        std::fs::create_dir_all(&config)?;
+
+        let env = config.join(".env");
+
+        if !env.exists() {
+            std::fs::write(&env, DEFAULT_DOTENV)?;
+        }
+
+        dotenv::from_path(&env)?;
+    }
 
     Ok(())
 }
diff --git a/gameserver/src/net/handlers/battle.rs b/gameserver/src/net/handlers/battle.rs
index 82bd8cb..4729265 100644
--- a/gameserver/src/net/handlers/battle.rs
+++ b/gameserver/src/net/handlers/battle.rs
@@ -1,6 +1,5 @@
 use super::*;
-
-static BATTLE_LINEUP: [u32; 4] = [1309, 1308, 1307, 1315];
+use crate::game::globals;
 
 pub async fn on_start_cocoon_stage_cs_req(
     session: &mut PlayerSession,
@@ -15,7 +14,7 @@ pub async fn on_start_cocoon_stage_cs_req(
             stage_id: 201012311,
             logic_random_seed: 4444,
             battle_id: 1,
-            battle_avatar_list: BATTLE_LINEUP
+            battle_avatar_list: globals::LINEUP
                 .iter()
                 .enumerate()
                 .map(|(idx, id)| BattleAvatar {
diff --git a/gameserver/src/net/handlers/lineup.rs b/gameserver/src/net/handlers/lineup.rs
index 78cd99f..bc9d66f 100644
--- a/gameserver/src/net/handlers/lineup.rs
+++ b/gameserver/src/net/handlers/lineup.rs
@@ -1,6 +1,5 @@
 use super::*;
-
-static STARTING_LINEUP: [u32; 4] = [1309, 1308, 1307, 1315];
+use crate::game::globals;
 
 pub async fn on_get_all_lineup_data_cs_req(
     session: &mut PlayerSession,
@@ -16,7 +15,7 @@ pub async fn on_get_all_lineup_data_cs_req(
                     plane_id: 10001,
                     name: String::from("Lineup 1"),
                     index: 0,
-                    avatar_list: STARTING_LINEUP
+                    avatar_list: globals::LINEUP
                         .iter()
                         .enumerate()
                         .map(|(idx, id)| LineupAvatar {
@@ -51,7 +50,7 @@ pub async fn on_get_cur_lineup_data_cs_req(
                     plane_id: 10001,
                     name: String::from("Lineup 1"),
                     index: 0,
-                    avatar_list: STARTING_LINEUP
+                    avatar_list: globals::LINEUP
                         .iter()
                         .enumerate()
                         .map(|(idx, id)| LineupAvatar {