diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 31e5e0a..3d80af3 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -125,7 +125,9 @@ void Bullet::OnHit(std::set<Entity*>& objects)
                     float dmg = gun_meta->i->atk() * (1 + player->buff.damage_add);
                     float def = 0;
                     float finaly_dmg = dmg * (1 - def/MetaMgr::Instance()->K);
+                    #if 0
                     player->stats.damage_amount_out += finaly_dmg;
+                    #endif
 
                     obstacle->health = std::max(0.0f, obstacle->health - finaly_dmg);
                     obstacle->dead = obstacle->health <= 0.01f;
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 04c5c93..6d37788 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -546,13 +546,32 @@ void Human::BeKill(int killer_id, const std::string& killer_name, int weapon_id)
                 }
             }
         }
-        if (!HasLiveTeammate() && !leave_) {
+        if (!HasNoDownedTeammate() && !leave_) {
             if (team_members) {
                 for (auto& member : *team_members) {
-                    member->SendGameOver();
+                    if (member == this) {
+                        member->SendGameOver();
+                    } else {
+                        if (member->dead) {
+                            member->SendGameOver();
+                        } else if (member->downed) {
+                            a8::XParams& timer_param = room->xtimer.GetTimerXParams(member->downed_timer);
+                            member->stats.killer_id = timer_param.param1;
+                            member->stats.killer_name = timer_param.param2.GetString();
+                            member->stats.weapon_id = timer_param.param2;
+                            member->dead = true;
+                            member->health = 0.0f;
+                            member->dead_frameno = room->frame_no;
+                            member->room->OnHumanDie(this);
+                            member->SyncAroundPlayers();
+                            member->SendGameOver();
+                            room->xtimer.DeleteTimer(member->downed_timer);
+                            member->downed_timer = nullptr;
+                        }
+                    }
                 }
             } else {
-                    SendGameOver();
+                SendGameOver();
             }
         }
     }
@@ -594,7 +613,7 @@ void Human::DecHP(float dec_hp, int killer_id, const std::string& killer_name, i
                 downed_timer = nullptr;
                 BeKill(killer_id, killer_name, weapon_id);
             } else {
-                if (HasLiveTeammate()) {
+                if (HasNoDownedTeammate()) {
                     health = MetaMgr::Instance()->GetSysParamAsInt("downed_recover_hp");
                     downed = true;
                     downed_timer = room->xtimer.AddRepeatTimerAndAttach(
@@ -645,7 +664,19 @@ bool Human::HasLiveTeammate()
 {
     if (team_members) {
         for (auto& hum : *team_members) {
-            if (!hum->dead) {
+            if (hum != this && !hum->dead) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+bool Human::HasNoDownedTeammate()
+{
+    if (team_members) {
+        for (auto& hum : *team_members) {
+            if (hum != this && (!hum->dead || !hum->downed)) {
                 return true;
             }
         }
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index 3133d08..3a86507 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -136,6 +136,7 @@ class Human : public Entity
     void AddOutObjects(Entity* entity);
     void RemoveOutObjects(Entity* entity);
     bool HasLiveTeammate();
+    bool HasNoDownedTeammate();
     void Land();
     void DoJump();
     void DoSkill();
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index bf8c41f..acc3c9c 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -218,6 +218,11 @@ void Room::ShuaAndroid()
         grid_service.AddHuman(hum);
         hum->FindLocation();
         hum->RefreshView();
+        {
+            hum->team_id = NewTeam();
+            hum->team_members = &team_hash_[hum->team_id];
+            hum->team_members->insert(hum);
+        }
     }
 }
 
@@ -958,6 +963,11 @@ void Room::MatchTeam(Human* hum)
             }
         }
     }
+    if (hum->team_id == 0) {
+        hum->team_id = NewTeam();
+        hum->team_members = &team_hash_[hum->team_id];
+        hum->team_members->insert(hum);
+    }
 }
 
 void Room::InitAirDrop()
diff --git a/third_party/a8engine b/third_party/a8engine
index 4a78121..fc99a36 160000
--- a/third_party/a8engine
+++ b/third_party/a8engine
@@ -1 +1 @@
-Subproject commit 4a78121aa74d10eaa73cbfa817f4308bcf627a33
+Subproject commit fc99a3615db9aabc1a77489e069a4e6af26d50d5