diff --git a/tests/test_exp_gain.rs b/tests/test_exp_gain.rs
new file mode 100644
index 0000000..04b019e
--- /dev/null
+++ b/tests/test_exp_gain.rs
@@ -0,0 +1,194 @@
+use std::time::SystemTime;
+
+use elseware::common::serverstate::{ClientId, ServerState};
+use elseware::entity::gateway::{EntityGateway, InMemoryGateway};
+use elseware::entity::account::{UserAccountEntity, NewUserAccountEntity, NewUserSettingsEntity};
+use elseware::entity::character::{CharacterEntity, NewCharacterEntity};
+//use elseware::entity::item::{NewItemEntity, ItemDetail, ItemLocation};
+use elseware::entity::item;
+use elseware::common::leveltable::CharacterLevelTable;
+use elseware::ship::ship::{ShipServerState, SendShipPacket, RecvShipPacket};
+use elseware::ship::items::{ClientItemId, ActiveItemEntityId, HeldItemType, FloorItemType};
+use elseware::ship::monster::MonsterType;
+
+use libpso::packet::ship::*;
+use libpso::packet::messages::*;
+use libpso::packet::login::{Login, Session};
+use libpso::{utf8_to_array, utf8_to_utf16_array};
+
+#[path = "common.rs"]
+mod common;
+use common::*;
+
+#[async_std::test]
+async fn test_character_gains_exp() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    join_lobby(&mut ship, ClientId(1)).await;
+    create_room(&mut ship, ClientId(1), "room", "").await;
+
+    let (enemy_id, exp) = {
+        let room = ship.rooms[0].as_ref().unwrap();
+        let (enemy_id, map_enemy) = (0..).filter_map(|i| {
+            room.maps.enemy_by_id(i).map(|enemy| {
+                (i, enemy)
+            }).ok()
+        }).next().unwrap();
+        let map_enemy_stats = room.monster_stats.get(&map_enemy.monster).unwrap();
+        (enemy_id, map_enemy_stats.exp)
+    };
+    
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::RequestExp(RequestExp{
+        client: enemy_id as u8,
+        target: 16,
+        enemy_id: enemy_id as u16,
+        client_id: 0,
+        unused: 0,
+        last_hitter: 1,
+    })))).await.unwrap().for_each(drop);
+
+    let c1 = ship.clients.get(&ClientId(1)).unwrap();
+    assert!(exp == c1.character.exp);
+}
+
+#[async_std::test]
+async fn test_character_levels_up() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, mut char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+    char1.exp = 49;
+    entity_gateway.save_character(&char1).await;
+
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    join_lobby(&mut ship, ClientId(1)).await;
+    create_room(&mut ship, ClientId(1), "room", "").await;
+
+    let enemy_id = {
+        let room = ship.rooms[0].as_ref().unwrap();
+        let (enemy_id, map_enemy) = (0..).filter_map(|i| {
+            room.maps.enemy_by_id(i).map(|enemy| {
+                (i, enemy)
+            }).ok()
+        }).next().unwrap();
+        enemy_id
+    };
+
+    let levelup_pkt = ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::RequestExp(RequestExp{
+        client: enemy_id as u8,
+        target: 16,
+        enemy_id: enemy_id as u16,
+        client_id: 0,
+        unused: 0,
+        last_hitter: 1,
+    })))).await.unwrap().collect::<Vec<_>>();
+
+    assert!(matches!(levelup_pkt[1].1, SendShipPacket::Message(Message {msg: GameMessage::PlayerLevelUp(PlayerLevelUp {lvl: 2, ..})})));
+
+    let leveltable = CharacterLevelTable::new();
+    let c1 = ship.clients.get(&ClientId(1)).unwrap();
+    assert!(leveltable.get_level_from_exp(c1.character.char_class, c1.character.exp) == 2);
+}
+
+#[async_std::test]
+async fn test_character_levels_up_multiple_times() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    join_lobby(&mut ship, ClientId(1)).await;
+    create_room(&mut ship, ClientId(1), "room", "").await;
+
+    let (enemy_id, exp) = {
+        let room = ship.rooms[0].as_ref().unwrap();
+        let (enemy_id, map_enemy) = (0..).filter_map(|i| {
+            room.maps.enemy_by_id(i).ok().and_then(|enemy| {
+                if enemy.monster == MonsterType::DarkFalz2 {
+                    Some((i, enemy))
+                }
+                else {
+                    None
+                }
+            })
+        }).next().unwrap();
+        let map_enemy_stats = room.monster_stats.get(&map_enemy.monster).unwrap();
+        (enemy_id, map_enemy_stats.exp)
+    };
+    
+    let levelup_pkt = ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::RequestExp(RequestExp{
+        client: enemy_id as u8,
+        target: 16,
+        enemy_id: enemy_id as u16,
+        client_id: 0,
+        unused: 0,
+        last_hitter: 1,
+    })))).await.unwrap().collect::<Vec<_>>();
+
+    assert!(matches!(levelup_pkt[1].1, SendShipPacket::Message(Message {msg: GameMessage::PlayerLevelUp(PlayerLevelUp {lvl: 8, ..})})));
+    
+    let c1 = ship.clients.get(&ClientId(1)).unwrap();
+    assert!(exp == c1.character.exp);
+}
+
+#[async_std::test]
+async fn test_one_character_gets_full_exp_and_other_attacker_gets_partial() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+    let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
+
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    log_in_char(&mut ship, ClientId(2), "a2", "a").await;
+    
+    join_lobby(&mut ship, ClientId(1)).await;
+    join_lobby(&mut ship, ClientId(2)).await;
+
+    create_room(&mut ship, ClientId(1), "room", "").await;
+    join_room(&mut ship, ClientId(2), 0).await;
+
+    let (enemy_id, exp) = {
+        let room = ship.rooms[0].as_ref().unwrap();
+        let (enemy_id, map_enemy) = (0..).filter_map(|i| {
+            room.maps.enemy_by_id(i).ok().and_then(|enemy| {
+                if enemy.monster == MonsterType::DarkFalz2 {
+                    Some((i, enemy))
+                }
+                else {
+                    None
+                }
+            })
+        }).next().unwrap();
+        let map_enemy_stats = room.monster_stats.get(&map_enemy.monster).unwrap();
+        (enemy_id, map_enemy_stats.exp)
+    };
+    
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::RequestExp(RequestExp{
+        client: enemy_id as u8,
+        target: 16,
+        enemy_id: enemy_id as u16,
+        client_id: 0,
+        unused: 0,
+        last_hitter: 1,
+    })))).await.unwrap().for_each(drop);
+
+    ship.handle(ClientId(2), &RecvShipPacket::Message(Message::new(GameMessage::RequestExp(RequestExp{
+        client: enemy_id as u8,
+        target: 16,
+        enemy_id: enemy_id as u16,
+        client_id: 0,
+        unused: 0,
+        last_hitter: 0,
+    })))).await.unwrap().for_each(drop);
+
+    let c1 = ship.clients.get(&ClientId(1)).unwrap();
+    let c2 = ship.clients.get(&ClientId(2)).unwrap();
+    assert!(c1.character.exp == exp);
+    assert!(c2.character.exp == (exp as f32 * 0.8) as u32);
+}