diff --git a/inc/yapb.h b/inc/yapb.h
index d4d781f..9bb4592 100644
--- a/inc/yapb.h
+++ b/inc/yapb.h
@@ -870,6 +870,7 @@ extern ConVar cv_graph_analyze_max_jump_height;
 extern ConVar cv_spraypaints;
 extern ConVar cv_whose_your_daddy;
 extern ConVar cv_grenadier_mode;
+extern ConVar cv_ignore_enemies_after_spawn_time;
 
 extern ConVar mp_freezetime;
 extern ConVar mp_roundtime;
diff --git a/src/botlib.cpp b/src/botlib.cpp
index 0e7e5f6..a968e00 100644
--- a/src/botlib.cpp
+++ b/src/botlib.cpp
@@ -3691,7 +3691,7 @@ bool Bot::isOutOfBombTimer () {
 }
 
 void Bot::updateHearing () {
-   if (game.is (GameFlags::FreeForAll)) {
+   if (game.is (GameFlags::FreeForAll) || m_enemyIgnoreTimer > game.time ()) {
       return;
    }
    edict_t *hearedEnemy = nullptr;
diff --git a/src/combat.cpp b/src/combat.cpp
index cd1e2c1..fa6783c 100644
--- a/src/combat.cpp
+++ b/src/combat.cpp
@@ -258,7 +258,7 @@ bool Bot::lookupEnemies () {
    if (!game.isNullEntity (m_enemy) && (m_states & Sense::SeeingEnemy)) {
       m_states &= ~Sense::SuspectEnemy;
    }
-   else if (game.isNullEntity (m_enemy) && m_seeEnemyTime + 1.0f > game.time () && util.isAlive (m_lastEnemy)) {
+   else if (game.isNullEntity (m_enemy) && m_seeEnemyTime + 4.0f > game.time () && util.isAlive (m_lastEnemy)) {
       m_states |= Sense::SuspectEnemy;
       m_aimFlags |= AimFlags::LastEnemy;
    }
diff --git a/src/engine.cpp b/src/engine.cpp
index a2e9307..0e031f7 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -11,6 +11,7 @@ ConVar cv_csdm_mode ("csdm_mode", "0", "Enables or disables CSDM / FFA mode for
 ConVar cv_ignore_map_prefix_game_mode ("ignore_map_prefix_game_mode", "0", "If enabled, bots will not apply game modes based on map name prefix (fy_ and ka_ specifically).");
 ConVar cv_threadpool_workers ("threadpool_workers", "-1", "Maximum number of threads bot will run to process some tasks. -1 means half of CPU cores used.", true, -1.0f, static_cast <float> (plat.hardwareConcurrency ()));
 ConVar cv_grenadier_mode ("grenadier_mode", "0", "If enabled, bots will not apply throwing condition on grenades.");
+ConVar cv_ignore_enemies_after_spawn_time ("ignore_enemies_after_spawn_time", "0", "Make bots ignore enemies for a specified here time in seconds on new round. Useful for Zombie Plague mods.", true, 0.0f, 540.0f);
 
 ConVar sv_skycolor_r ("sv_skycolor_r", nullptr, Var::GameRef);
 ConVar sv_skycolor_g ("sv_skycolor_g", nullptr, Var::GameRef);
@@ -974,6 +975,14 @@ void Game::applyGameModes () {
          m_gameFlags &= ~(GameFlags::FreeForAll | GameFlags::CSDM);
       }
    }
+
+   // some little support for zombie plague
+   static ConVarRef zp_delay ("zp_delay");
+
+   // update our ignore timer if zp_elay exists
+   if (zp_delay.exists () && zp_delay.value () > 0.0f && cv_ignore_enemies_after_spawn_time.float_ () < 1.0f) {
+      cv_ignore_enemies_after_spawn_time.set (zp_delay.value () + 2.0f);
+   }
 }
 
 void Game::slowFrame () {
diff --git a/src/manager.cpp b/src/manager.cpp
index 2bad1b6..8b539c2 100644
--- a/src/manager.cpp
+++ b/src/manager.cpp
@@ -1463,7 +1463,6 @@ void Bot::newRound () {
 
    m_buttonPushTime = 0.0f;
    m_enemyUpdateTime = 0.0f;
-   m_enemyIgnoreTimer = 0.0f;
    m_retreatTime = 0.0f;
    m_seeEnemyTime = 0.0f;
    m_shootAtDeadTime = 0.0f;
@@ -1582,6 +1581,14 @@ void Bot::newRound () {
    m_goalHist.clear ();
    m_ignoredBreakable.clear ();
 
+   // ignore enemies for some time if needed
+   if (cv_ignore_enemies_after_spawn_time.float_ () > 0.0f) {
+      m_enemyIgnoreTimer = game.time () + cv_ignore_enemies_after_spawn_time.float_ ();
+   }
+   else {
+      m_enemyIgnoreTimer = 0.0f;
+   }
+
    // update refvec for blocked movement
    updateRightRef ();