diff --git a/index.html b/index.html
index 96b9374e..3b2d7203 100644
--- a/index.html
+++ b/index.html
@@ -8022,7 +8022,6 @@
     <script src="libs/jquery-ui.min.js"></script>
     <script src="versioning.js"></script>
     <script src="libs/d3.min.js"></script>
-    <script src="libs/priority-queue.min.js"></script>
     <script src="libs/flatqueue.js"></script>
     <script src="libs/delaunator.min.js"></script>
     <script src="libs/indexedDB.js?v=1.99.00"></script>
@@ -8053,14 +8052,14 @@
     <script src="modules/lakes.js?v=1.99.00"></script>
     <script src="modules/biomes.js?v=1.99.00"></script>
     <script src="modules/names-generator.js?v=1.105.11"></script>
-    <script src="modules/cultures-generator.js?v=1.105.13"></script>
-    <script src="modules/burgs-and-states.js?v=1.105.7"></script>
-    <script src="modules/provinces-generator.js?v=1.104.0"></script>
+    <script src="modules/cultures-generator.js?v=1.105.21"></script>
+    <script src="modules/burgs-and-states.js?v=1.105.21"></script>
+    <script src="modules/provinces-generator.js?v=1.105.21"></script>
     <script src="modules/routes-generator.js?v=1.104.10"></script>
-    <script src="modules/religions-generator.js?v=1.99.05"></script>
+    <script src="modules/religions-generator.js?v=1.105.21"></script>
     <script src="modules/military-generator.js?v=1.104.0"></script>
     <script src="modules/markers-generator.js?v=1.104.0"></script>
-    <script src="modules/zones-generator.js?v=1.104.0"></script>
+    <script src="modules/zones-generator.js?v=1.105.21"></script>
     <script src="modules/coa-generator.js?v=1.99.00"></script>
     <script src="modules/submap.js?v=1.104.0"></script>
     <script src="libs/alea.min.js?v1.105.0"></script>
diff --git a/libs/priority-queue.min.js b/libs/priority-queue.min.js
deleted file mode 100644
index acf2506b..00000000
--- a/libs/priority-queue.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).PriorityQueue=t()}}(function(){return function t(e,i,r){function o(n,s){if(!i[n]){if(!e[n]){var h="function"==typeof require&&require;if(!s&&h)return h(n,!0);if(a)return a(n,!0);var u=new Error("Cannot find module '"+n+"'");throw u.code="MODULE_NOT_FOUND",u}var p=i[n]={exports:{}};e[n][0].call(p.exports,function(t){var i=e[n][1][t];return o(i||t)},p,p.exports,t,e,i,r)}return i[n].exports}for(var a="function"==typeof require&&require,n=0;n<r.length;n++)o(r[n]);return o}({1:[function(t,e,i){var r,o,a,n,s,h={}.hasOwnProperty;r=t("./PriorityQueue/AbstractPriorityQueue"),o=t("./PriorityQueue/ArrayStrategy"),n=t("./PriorityQueue/BinaryHeapStrategy"),a=t("./PriorityQueue/BHeapStrategy"),(s=function(t){function e(t){t||(t={}),t.strategy||(t.strategy=n),t.comparator||(t.comparator=function(t,e){return(t||0)-(e||0)}),e.__super__.constructor.call(this,t)}return function(t,e){for(var i in e)h.call(e,i)&&(t[i]=e[i]);function r(){this.constructor=t}r.prototype=e.prototype,t.prototype=new r,t.__super__=e.prototype}(e,r),e}()).ArrayStrategy=o,s.BinaryHeapStrategy=n,s.BHeapStrategy=a,e.exports=s},{"./PriorityQueue/AbstractPriorityQueue":2,"./PriorityQueue/ArrayStrategy":3,"./PriorityQueue/BHeapStrategy":4,"./PriorityQueue/BinaryHeapStrategy":5}],2:[function(t,e,i){e.exports=function(){function t(t){var e;if(null==(null!=t?t.strategy:void 0))throw"Must pass options.strategy, a strategy";if(null==(null!=t?t.comparator:void 0))throw"Must pass options.comparator, a comparator";this.priv=new t.strategy(t),this.length=(null!=t&&null!=(e=t.initialValues)?e.length:void 0)||0}return t.prototype.queue=function(t){this.length++,this.priv.queue(t)},t.prototype.dequeue=function(t){if(!this.length)throw"Empty queue";return this.length--,this.priv.dequeue()},t.prototype.peek=function(t){if(!this.length)throw"Empty queue";return this.priv.peek()},t.prototype.clear=function(){return this.length=0,this.priv.clear()},t}()},{}],3:[function(t,e,i){var r;r=function(t,e,i){var r,o,a;for(o=0,r=t.length;o<r;)i(t[a=o+r>>>1],e)>=0?o=a+1:r=a;return o},e.exports=function(){function t(t){var e;this.options=t,this.comparator=this.options.comparator,this.data=(null!=(e=this.options.initialValues)?e.slice(0):void 0)||[],this.data.sort(this.comparator).reverse()}return t.prototype.queue=function(t){var e;e=r(this.data,t,this.comparator),this.data.splice(e,0,t)},t.prototype.dequeue=function(){return this.data.pop()},t.prototype.peek=function(){return this.data[this.data.length-1]},t.prototype.clear=function(){this.data.length=0},t}()},{}],4:[function(t,e,i){e.exports=function(){function t(t){var e,i,r,o,a,n,s,h;for(this.comparator=(null!=t?t.comparator:void 0)||function(t,e){return t-e},this.pageSize=(null!=t?t.pageSize:void 0)||512,this.length=0,s=0;1<<s<this.pageSize;)s+=1;if(1<<s!==this.pageSize)throw"pageSize must be a power of two";for(this._shift=s,this._emptyMemoryPageTemplate=e=[],i=0,a=this.pageSize;0<=a?i<a:i>a;0<=a?++i:--i)e.push(null);if(this._memory=[],this._mask=this.pageSize-1,t.initialValues)for(r=0,o=(n=t.initialValues).length;r<o;r++)h=n[r],this.queue(h)}return t.prototype.queue=function(t){this.length+=1,this._write(this.length,t),this._bubbleUp(this.length,t)},t.prototype.dequeue=function(){var t,e;return t=this._read(1),e=this._read(this.length),this.length-=1,this.length>0&&(this._write(1,e),this._bubbleDown(1,e)),t},t.prototype.peek=function(){return this._read(1)},t.prototype.clear=function(){this.length=0,this._memory.length=0},t.prototype._write=function(t,e){var i;for(i=t>>this._shift;i>=this._memory.length;)this._memory.push(this._emptyMemoryPageTemplate.slice(0));return this._memory[i][t&this._mask]=e},t.prototype._read=function(t){return this._memory[t>>this._shift][t&this._mask]},t.prototype._bubbleUp=function(t,e){var i,r,o,a;for(i=this.comparator;t>1&&(r=t&this._mask,t<this.pageSize||r>3?o=t&~this._mask|r>>1:r<2?(o=t-this.pageSize>>this._shift,o+=o&~(this._mask>>1),o|=this.pageSize>>1):o=t-2,!(i(a=this._read(o),e)<0));)this._write(o,e),this._write(t,a),t=o},t.prototype._bubbleDown=function(t,e){var i,r,o,a,n;for(n=this.comparator;t<this.length;)if(t>this._mask&&!(t&this._mask-1)?i=r=t+2:t&this.pageSize>>1?(i=(t&~this._mask)>>1,r=(i=(i|=t&this._mask>>1)+1<<this._shift)+1):r=(i=t+(t&this._mask))+1,i!==r&&r<=this.length)if(o=this._read(i),a=this._read(r),n(o,e)<0&&n(o,a)<=0)this._write(i,e),this._write(t,o),t=i;else{if(!(n(a,e)<0))break;this._write(r,e),this._write(t,a),t=r}else{if(!(i<=this.length))break;if(!(n(o=this._read(i),e)<0))break;this._write(i,e),this._write(t,o),t=i}},t}()},{}],5:[function(t,e,i){e.exports=function(){function t(t){var e;this.comparator=(null!=t?t.comparator:void 0)||function(t,e){return t-e},this.length=0,this.data=(null!=(e=t.initialValues)?e.slice(0):void 0)||[],this._heapify()}return t.prototype._heapify=function(){var t,e,i;if(this.data.length>0)for(t=e=1,i=this.data.length;1<=i?e<i:e>i;t=1<=i?++e:--e)this._bubbleUp(t)},t.prototype.queue=function(t){this.data.push(t),this._bubbleUp(this.data.length-1)},t.prototype.dequeue=function(){var t,e;return e=this.data[0],t=this.data.pop(),this.data.length>0&&(this.data[0]=t,this._bubbleDown(0)),e},t.prototype.peek=function(){return this.data[0]},t.prototype.clear=function(){this.length=0,this.data.length=0},t.prototype._bubbleUp=function(t){for(var e,i;t>0&&(e=t-1>>>1,this.comparator(this.data[t],this.data[e])<0);)i=this.data[e],this.data[e]=this.data[t],this.data[t]=i,t=e},t.prototype._bubbleDown=function(t){var e,i,r,o,a;for(e=this.data.length-1;o=(i=1+(t<<1))+1,r=t,i<=e&&this.comparator(this.data[i],this.data[r])<0&&(r=i),o<=e&&this.comparator(this.data[o],this.data[r])<0&&(r=o),r!==t;)a=this.data[r],this.data[r]=this.data[t],this.data[t]=a,t=r},t}()},{}]},{},[1])(1)});
\ No newline at end of file
diff --git a/modules/burgs-and-states.js b/modules/burgs-and-states.js
index 90ab2bf2..4b73276b 100644
--- a/modules/burgs-and-states.js
+++ b/modules/burgs-and-states.js
@@ -286,7 +286,8 @@ window.BurgsAndStates = (() => {
     const {cells, states, cultures, burgs} = pack;
 
     cells.state = cells.state || new Uint16Array(cells.i.length);
-    const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
+
+    const queue = new FlatQueue();
     const cost = [];
 
     const globalGrowthRate = byId("growthRate").valueAsNumber || 1;
@@ -307,12 +308,13 @@ window.BurgsAndStates = (() => {
       cells.state[capitalCell] = state.i;
       const cultureCenter = cultures[state.culture].center;
       const b = cells.biome[cultureCenter]; // state native biome
-      queue.queue({e: state.center, p: 0, s: state.i, b});
+      queue.push({e: state.center, p: 0, s: state.i, b}, 0);
       cost[state.center] = 1;
     }
 
     while (queue.length) {
-      const next = queue.dequeue();
+      const next = queue.pop();
+
       const {e, p, s, b} = next;
       const {type, culture} = states[s];
 
@@ -335,7 +337,7 @@ window.BurgsAndStates = (() => {
         if (!cost[e] || totalCost < cost[e]) {
           if (cells.h[e] >= 20) cells.state[e] = s; // assign state to cell
           cost[e] = totalCost;
-          queue.queue({e, p: totalCost, s, b});
+          queue.push({e, p: totalCost, s, b}, totalCost);
         }
       });
     }
diff --git a/modules/cultures-generator.js b/modules/cultures-generator.js
index f2203146..34dc5edd 100644
--- a/modules/cultures-generator.js
+++ b/modules/cultures-generator.js
@@ -518,7 +518,7 @@ window.Cultures = (function () {
     TIME && console.time("expandCultures");
     const {cells, cultures} = pack;
 
-    const queue = new PriorityQueue({comparator: (a, b) => a.priority - b.priority});
+    const queue = new FlatQueue();
     const cost = [];
 
     const neutralRate = byId("neutralRate")?.valueAsNumber || 1;
@@ -538,11 +538,11 @@ window.Cultures = (function () {
 
     for (const culture of cultures) {
       if (!culture.i || culture.removed || culture.lock) continue;
-      queue.queue({cellId: culture.center, cultureId: culture.i, priority: 0});
+      queue.push({cellId: culture.center, cultureId: culture.i, priority: 0}, 0);
     }
 
     while (queue.length) {
-      const {cellId, priority, cultureId} = queue.dequeue();
+      const {cellId, priority, cultureId} = queue.pop();
       const {type, expansionism} = cultures[cultureId];
 
       cells.c[cellId].forEach(neibCellId => {
@@ -566,7 +566,7 @@ window.Cultures = (function () {
         if (!cost[neibCellId] || totalCost < cost[neibCellId]) {
           if (cells.pop[neibCellId] > 0) cells.culture[neibCellId] = cultureId; // assign culture to populated cell
           cost[neibCellId] = totalCost;
-          queue.queue({cellId: neibCellId, cultureId, priority: totalCost});
+          queue.push({cellId: neibCellId, cultureId, priority: totalCost}, totalCost);
         }
       });
     }
diff --git a/modules/provinces-generator.js b/modules/provinces-generator.js
index 8563f682..c0f8e8f7 100644
--- a/modules/provinces-generator.js
+++ b/modules/provinces-generator.js
@@ -77,18 +77,18 @@ window.Provinces = (function () {
     });
 
     // expand generated provinces
-    const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
+    const queue = new FlatQueue();
     const cost = [];
 
     provinces.forEach(p => {
       if (!p.i || p.removed || isProvinceLocked(p)) return;
       provinceIds[p.center] = p.i;
-      queue.queue({e: p.center, p: 0, province: p.i, state: p.state});
+      queue.push({e: p.center, province: p.i, state: p.state, p: 0}, 0);
       cost[p.center] = 1;
     });
 
     while (queue.length) {
-      const {e, p, province, state} = queue.dequeue();
+      const {e, p, province, state} = queue.pop();
 
       cells.c[e].forEach(e => {
         if (isProvinceCellLocked(e)) return; // do not overwrite cell of locked provinces
@@ -103,7 +103,7 @@ window.Provinces = (function () {
         if (!cost[e] || totalCost < cost[e]) {
           if (land) provinceIds[e] = province; // assign province to a cell
           cost[e] = totalCost;
-          queue.queue({e, p: totalCost, province, state});
+          queue.push({e, province, state, p: totalCost}, totalCost);
         }
       });
     }
@@ -158,9 +158,9 @@ window.Provinces = (function () {
         // expand province
         const cost = [];
         cost[center] = 1;
-        queue.queue({e: center, p: 0});
+        queue.push({e: center, p: 0}, 0);
         while (queue.length) {
-          const {e, p} = queue.dequeue();
+          const {e, p} = queue.pop();
 
           cells.c[e].forEach(nextCellId => {
             if (provinceIds[nextCellId]) return;
@@ -173,7 +173,7 @@ window.Provinces = (function () {
             if (!cost[nextCellId] || totalCost < cost[nextCellId]) {
               if (land && cells.state[nextCellId] === s.i) provinceIds[nextCellId] = provinceId; // assign province to a cell
               cost[nextCellId] = totalCost;
-              queue.queue({e: nextCellId, p: totalCost});
+              queue.push({e: nextCellId, p: totalCost}, totalCost);
             }
           });
         }
@@ -216,15 +216,15 @@ window.Provinces = (function () {
         // check if there is a land way within the same state between two cells
         function isPassable(from, to) {
           if (cells.f[from] !== cells.f[to]) return false; // on different islands
-          const queue = [from],
+          const passableQueue = [from],
             used = new Uint8Array(cells.i.length),
             state = cells.state[from];
-          while (queue.length) {
-            const current = queue.pop();
+          while (passableQueue.length) {
+            const current = passableQueue.pop();
             if (current === to) return true; // way is found
             cells.c[current].forEach(c => {
               if (used[c] || cells.h[c] < 20 || cells.state[c] !== state) return;
-              queue.push(c);
+              passableQueue.push(c);
               used[c] = 1;
             });
           }
diff --git a/modules/religions-generator.js b/modules/religions-generator.js
index 5e5e08f6..2bb972db 100644
--- a/modules/religions-generator.js
+++ b/modules/religions-generator.js
@@ -695,7 +695,7 @@ window.Religions = (function () {
     const {cells, routes} = pack;
     const religionIds = spreadFolkReligions(religions);
 
-    const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
+    const queue = new FlatQueue();
     const cost = [];
 
     // limit cost for organized religions growth
@@ -705,14 +705,14 @@ window.Religions = (function () {
       .filter(r => r.i && !r.lock && r.type !== "Folk" && !r.removed)
       .forEach(r => {
         religionIds[r.center] = r.i;
-        queue.queue({e: r.center, p: 0, r: r.i, s: cells.state[r.center]});
+        queue.push({e: r.center, p: 0, r: r.i, s: cells.state[r.center]}, 0);
         cost[r.center] = 1;
       });
 
     const religionsMap = new Map(religions.map(r => [r.i, r]));
 
     while (queue.length) {
-      const {e: cellId, p, r, s: state} = queue.dequeue();
+      const {e: cellId, p, r, s: state} = queue.pop();
       const {culture, expansion, expansionism} = religionsMap.get(r);
 
       cells.c[cellId].forEach(nextCell => {
@@ -732,7 +732,7 @@ window.Religions = (function () {
           if (cells.culture[nextCell]) religionIds[nextCell] = r; // assign religion to cell
           cost[nextCell] = totalCost;
 
-          queue.queue({e: nextCell, p: totalCost, r, s: state});
+          queue.push({e: nextCell, p: totalCost, r, s: state}, totalCost);
         }
       });
     }
diff --git a/modules/zones-generator.js b/modules/zones-generator.js
index 7e8ec94b..0fdab688 100644
--- a/modules/zones-generator.js
+++ b/modules/zones-generator.js
@@ -209,11 +209,11 @@ window.Zones = (function () {
     const cost = [];
     const maxCells = rand(20, 40);
 
-    const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
-    queue.queue({e: burg.cell, p: 0});
+    const queue = new FlatQueue();
+    queue.push({e: burg.cell, p: 0}, 0);
 
     while (queue.length) {
-      const next = queue.dequeue();
+      const next = queue.pop();
       if (cells.burg[next.e] || cells.pop[next.e]) cellsArray.push(next.e);
       usedCells[next.e] = 1;
 
@@ -224,7 +224,7 @@ window.Zones = (function () {
 
         if (!cost[nextCellId] || p < cost[nextCellId]) {
           cost[nextCellId] = p;
-          queue.queue({e: nextCellId, p});
+          queue.push({e: nextCellId, p}, p);
         }
       });
     }
@@ -251,11 +251,11 @@ window.Zones = (function () {
     const cost = [];
     const maxCells = rand(5, 25);
 
-    const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
-    queue.queue({e: burg.cell, p: 0});
+    const queue = new FlatQueue();
+    queue.push({e: burg.cell, p: 0}, 0);
 
     while (queue.length) {
-      const next = queue.dequeue();
+      const next = queue.pop();
       if (cells.burg[next.e] || cells.pop[next.e]) cellsArray.push(next.e);
       usedCells[next.e] = 1;
 
@@ -266,7 +266,7 @@ window.Zones = (function () {
 
         if (!cost[e] || p < cost[e]) {
           cost[e] = p;
-          queue.queue({e, p});
+          queue.push({e, p}), p;
         }
       });
     }
diff --git a/versioning.js b/versioning.js
index fcd5504b..c5bf2fa4 100644
--- a/versioning.js
+++ b/versioning.js
@@ -12,7 +12,8 @@
  *
  * Example: 1.102.2 -> Major version 1, Minor version 102, Patch version 2
  */
-const VERSION = "1.105.20";
+
+const VERSION = "1.105.21";
 if (parseMapVersion(VERSION) !== VERSION) alert("versioning.js: Invalid format or parsing function");
 
 {