diff --git a/rc_chat_room/src/state/chat/config.rs b/rc_chat_room/src/state/chat/config.rs
index 52c147e..301778a 100644
--- a/rc_chat_room/src/state/chat/config.rs
+++ b/rc_chat_room/src/state/chat/config.rs
@@ -202,7 +202,7 @@ impl BuiltIn {
                     }
                 }
                 if stats.is_empty() {
-                    stats.push(format!("TODO: general stats (try db)"));
+                    stats.push("TODO: general stats (try db)".to_owned());
                 }
                 stats.join("\n")
             },
@@ -282,9 +282,9 @@ impl Intercom {
                         },
                         vec![],
                     ).await;
-                    format!("Sent dev broadcast to everyone")
+                    "Sent dev broadcast to everyone".to_owned()
                 } else {
-                    format!("Missing dev message, did not send")
+                    "Missing dev message, did not send".to_owned()
                 }
             },
             Self::Maintenance => {
@@ -293,9 +293,9 @@ impl Intercom {
                         oj_rc_core::persist::user::intercom::IntercomMaintenanceMessage { message },
                         vec![],
                     ).await;
-                    format!("Sent maintenance message")
+                    "Sent maintenance message".to_owned()
                 } else {
-                    format!("Missing maintenance message, did not send")
+                    "Missing maintenance message, did not send".to_owned()
                 }
 
             }
diff --git a/rc_core/src/persist/combat.rs b/rc_core/src/persist/combat.rs
index 4b09f93..d409d0b 100644
--- a/rc_core/src/persist/combat.rs
+++ b/rc_core/src/persist/combat.rs
@@ -138,6 +138,12 @@ impl super::config::SelfValidator for GameEventSequence {
     fn validate(&self, info: &mut super::config::ValidationInfo, ctx: &Self::Context) -> bool {
         // TODO
         let mut is_ok = true;
+        if self.modes.is_empty() {
+            info.error(super::config::ValidationMessage {
+                path: vec!["modes".to_owned()],
+                message: "Game sequence must have at least one mode (event) in the rotation".to_owned(),
+            });
+        }
         for (i, mode) in self.modes.iter().enumerate() {
             is_ok &= mode.validate_in(info, ctx, &format!("modes[{}]", i));
         }
@@ -185,28 +191,36 @@ impl super::config::SelfValidator for GameEvents {
             });
             is_ok = false;
         }
-        if matches!(self.multiplayer.mode, GameType::Pit) {
-            if ctx.multiplayer.fakes.iter().any(|f| f.team.is_some_and(|t| (t as usize) < ctx.multiplayer.players_per_game))
-                || ctx.multiplayer.fakes.iter().enumerate()
-                    .any(|(i, f)| ctx.multiplayer.fakes.iter().enumerate()
-                        .any(|(i2, f2)| i != i2 && f.team == f2.team)) {
-                info.warn(crate::persist::config::ValidationMessage {
-                    path: vec!["multiplayer".to_owned(), "mode".to_owned()],
-                    message: format!("Multiplayer game mode {:?} does not work well with more than one (fake) player per team", self.multiplayer.mode),
-                });
-            }
-            if ctx.multiplayer.fakes.iter().any(|f| matches!(f.implementation, super::multiplayer::ClientEmulation::ClientAI)) {
-                info.warn(crate::persist::config::ValidationMessage {
-                    path: vec!["multiplayer".to_owned(), "mode".to_owned()],
-                    message: format!("Multiplayer game mode {:?} does not work well with client-side AI", self.multiplayer.mode),
-                });
-            }
-        } else {
-            if ctx.multiplayer.fakes.iter().any(|f| f.team.is_some_and(|t| t > 1)) {
-                info.warn(crate::persist::config::ValidationMessage {
-                    path: vec!["multiplayer".to_owned(), "mode".to_owned()],
-                    message: format!("Multiplayer game mode {:?} does not work well with (fake) players split between more than 2 teams", self.multiplayer.mode),
-                });
+        if ctx.multiplayer.enabled {
+            if matches!(self.multiplayer.mode, GameType::Pit) {
+                if ctx.multiplayer.fakes.iter().any(|f| f.team.is_some_and(|t| (t as usize) < ctx.multiplayer.players_per_game))
+                    || ctx.multiplayer.fakes.iter().enumerate()
+                        .any(|(i, f)| ctx.multiplayer.fakes.iter().enumerate()
+                            .any(|(i2, f2)| i != i2 && f.team == f2.team)) {
+                    info.warn(crate::persist::config::ValidationMessage {
+                        path: vec!["multiplayer".to_owned(), "mode".to_owned()],
+                        message: format!("Multiplayer game mode {:?} does not work well with more than one (fake) player per team", self.multiplayer.mode),
+                    });
+                }
+                if ctx.multiplayer.fakes.iter().any(|f| matches!(f.implementation, super::multiplayer::ClientEmulation::ClientAI)) {
+                    info.warn(crate::persist::config::ValidationMessage {
+                        path: vec!["multiplayer".to_owned(), "mode".to_owned()],
+                        message: format!("Multiplayer game mode {:?} does not work well with client-side AI", self.multiplayer.mode),
+                    });
+                }
+            } else {
+                if ctx.multiplayer.fakes.iter().any(|f| f.team.is_some_and(|t| t > 1)) {
+                    info.warn(crate::persist::config::ValidationMessage {
+                        path: vec!["multiplayer".to_owned(), "mode".to_owned()],
+                        message: format!("Multiplayer game mode {:?} does not work well with (fake) players split between more than 2 teams", self.multiplayer.mode),
+                    });
+                }
+                if !ctx.maps.map.contains_key(&self.multiplayer.map) {
+                    info.warn(crate::persist::config::ValidationMessage {
+                        path: vec!["multiplayer".to_owned(), "map".to_owned()],
+                        message: format!("Multiplayer game map {:?} is not configured", self.multiplayer.map),
+                    });
+                }
             }
         }
         is_ok
diff --git a/rc_core/src/persist/user/multiplayer.rs b/rc_core/src/persist/user/multiplayer.rs
index 503c3dc..1a60b86 100644
--- a/rc_core/src/persist/user/multiplayer.rs
+++ b/rc_core/src/persist/user/multiplayer.rs
@@ -12,7 +12,7 @@ impl UserData {
     pub(super) async fn generate_fake_players_data(
         &self,
         _guid: i64,
-        real_players: &Vec<super::PlayerLobbyDescriptor>,
+        real_players: &[super::PlayerLobbyDescriptor],
         factory: &dyn oj_rc_factory::VehicleFactoryAdapter,
         cpu_counter: &crate::cubes::CpuListParser,
         weapon_lister: &crate::cubes::WeaponListParser,
diff --git a/rc_factory/src/arc/adapter.rs b/rc_factory/src/arc/adapter.rs
index fd80df8..a54e0dc 100644
--- a/rc_factory/src/arc/adapter.rs
+++ b/rc_factory/src/arc/adapter.rs
@@ -19,7 +19,7 @@ impl ArcAdapter {
             orm: db,
             ignore_expiry: show_expired,
             cdn: cdn.to_owned(),
-            override_cdn: override_cdn,
+            override_cdn,
             spoof_users: username_spoofing,
         };
         // do query to ensure database is ok