diff --git a/assets/app.js b/assets/app.js
index 11b3e11..884ef40 100644
--- a/assets/app.js
+++ b/assets/app.js
@@ -50,6 +50,34 @@ $(function () {
 			]
 	  });
 
+	  $('.js-marker-group').smallworld({
+	  	geojson: data,
+	  	center: [45, -50],
+	  	markers: [
+	  		{
+	  			values: [
+	  				[37.757719928168605, -122.43760000000003],
+					[51.528868434293145, -0.10159864999991441]
+	  			],
+	  			markerColor: 'blue',
+	  			markerSize: 3
+	  		},
+	  		{
+	  			values: [
+	  				[40.705960705452846, -73.9780035]
+	  			]
+	  			// use default color and size
+	  		},
+	  		{
+	  			values: [
+	  				[-27.757719928168605, 122.43760000000003]
+	  			],
+	  			markerColor: 'red'
+	  		}
+	  	],
+	  	markerColor: 'black'
+	  });
+
   });
 
-});
\ No newline at end of file
+});
diff --git a/dist/smallworld.js b/dist/smallworld.js
index cd9a5e1..9a69991 100644
--- a/dist/smallworld.js
+++ b/dist/smallworld.js
@@ -285,16 +285,40 @@
     },
 
     addMarker: function (point, options) {
-  
+
+      // check if 'point' is a group of markers
+      if (!(point instanceof Array) && typeof(point) !== "number") {
+        options = options || {};
+        // make a deep copy
+        var groupOptions = {};
+        groupOptions = JSON.parse(JSON.stringify(options));
+        if (point.markerColor !== undefined) {
+          groupOptions.markerColor = point.markerColor;
+        }
+        if (point.markerSize !== undefined) {
+          groupOptions.markerSize = point.markerSize;
+        }
+        for (var i = 0; i < point.values.length; i++) {
+          this.pAddMarker(point.values[i], groupOptions);
+        }
+      } else {
+        this.pAddMarker(point, options);
+      }
+
+    },
+
+    pAddMarker: function (point, options) {
       options = options || {};
 
       var center = this.coordinateToPoint(point[0], point[1]);
-        
+
+      var markerSize = options.markerSize || this.options.markerSize;
+      var markerColor = options.markerColor || this.options.markerColor;
+
       this.context.beginPath();
-      this.context.arc(center.x, center.y, this.options.markerSize, 0, 2 * Math.PI, false);
-      this.context.fillStyle = this.options.markerColor;
+      this.context.arc(center.x, center.y, markerSize, 0, 2 * Math.PI, false);
+      this.context.fillStyle = markerColor;
       this.context.fill();
-
     }
 
   };
diff --git a/dist/smallworld.min.js b/dist/smallworld.min.js
index 64ea32c..ec13b8b 100644
--- a/dist/smallworld.min.js
+++ b/dist/smallworld.min.js
@@ -2,4 +2,4 @@
 // @version v0.1.0
 // @link https://github.com/mikefowler/smallworld.js
 // @license MIT
-!function(t,i){"use strict";"function"==typeof define&&define.amd?define(["exports"],function(e){t.Smallworld=i(t,e)}):"undefined"!=typeof exports?i(t,exports):t.Smallworld=i(t)}(this,function(t){"use strict";function i(t){for(var i=1;i<arguments.length;i++){var e=arguments[i];for(var o in e)void 0===t[o]&&(t[o]=e[o])}return t}t.requestAnimFrame=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||function(t){window.setTimeout(t,1e3/60)}}();var e={zoom:0,center:[0,0],waterColor:"#b3d1ff",landColor:"#fff",markerColor:"#333",markerSize:5},o=function(t,s){if(!t)throw new Error("A DOM element is required for Smallworld to initialize");if(this.el=t,this.options=i(s||{},e,o.defaults),!this.options.geojson)throw new Error("A GeoJSON source is required for Smallworld to initialize");this.initialize.apply(this),this.draw()};return o.defaults={},o.prototype={initialize:function(){this.width=this.el.clientWidth,this.height=this.el.clientHeight,this.tile=new o.Tile(this.options),this.map=this.createMap(this.width,this.height),this.context=this.map.getContext("2d"),this.el.appendChild(this.map),this.draw()},createMap:function(t,i){var e=document.createElement("canvas");return e.width=t,e.height=i,e.style.position="absolute",e.style.top=0,e.style.left=0,e},getTile:function(){return new o.Tile(arguments)},resize:function(){this.map.width=this.width,this.map.height=this.height},draw:function(){var t,i,e,o,s;for(this.context.fillStyle=this.options.waterColor,this.context.fillRect(0,0,this.width,this.height),t=Math.ceil(this.width/2-this.tile.center.x),i=Math.ceil(this.height/2-this.tile.center.y),e=Math.ceil(t/this.tile.width),o=Math.ceil((this.width-(t+this.tile.width))/this.tile.width),s=1;e>=s;s++)this.context.drawImage(this.tile.el,t-this.tile.width*s,i);for(s=1;o>=s;s++)this.context.drawImage(this.tile.el,t+this.tile.width*s,i);if(this.context.drawImage(this.tile.el,t,i),this.options.marker)this.tile.addMarker(this.options.marker===!0?this.options.center:this.options.marker);else if(this.options.markers)for(var n=0;n<this.options.markers.length;n++)this.tile.addMarker(this.options.markers[n])}},o.Tile=function(t){this.options=i(t||{},e),this.initialize.apply(this)},o.Tile.prototype={initialize:function(){this.geojson=this.options.geojson.features||this.options.geojson,this.scale=Math.pow(2,parseInt(this.options.zoom)),this.bounds=this.getBounds(),this.width=Math.ceil(256*this.scale),this.height=Math.ceil(this.width/1.041975309),this.center=this.coordinateToPoint(this.options.center[0],this.options.center[1]),this.el=document.createElement("canvas"),this.el.width=this.width,this.el.height=this.height,this.context=this.el.getContext("2d"),this.draw()},getBounds:function(){for(var t,i,e={},o=0;o<this.geojson.length;o++){t=this.geojson[o].geometry.coordinates[0];for(var s=0;s<t.length;s++)i=this.projectCoordinate(t[s][1],t[s][0]),e.xMin=e.xMin<i.x?e.xMin:i.x,e.xMax=e.xMax>i.x?e.xMax:i.x,e.yMin=e.yMin<i.y?e.yMin:i.y,e.yMax=e.yMax>i.y?e.yMax:i.y}return e},draw:function(){this.context.fillStyle=this.options.landColor;for(var t=0;t<this.geojson.length;t++){for(var i=this.geojson[t].geometry.coordinates[0],e=0;e<i.length;e++){var o=this.coordinateToPoint(i[e][1],i[e][0]);0===e?(this.context.beginPath(),this.context.moveTo(o.x,o.y)):this.context.lineTo(o.x,o.y)}this.context.fill()}},coordinateToPoint:function(t,i){var e=this.projectCoordinate(t,i),o=this.width/Math.abs(this.bounds.xMax-this.bounds.xMin),s=this.height/Math.abs(this.bounds.yMax-this.bounds.yMin),n=s>o?o:s;return{x:(e.x-this.bounds.xMin)*n,y:(this.bounds.yMax-e.y)*n}},projectCoordinate:function(t,i){var e=o.Projection.mercator(t,i);return e.x=e.x*this.scale,e.y=e.y*this.scale,e},addMarker:function(t,i){i=i||{};var e=this.coordinateToPoint(t[0],t[1]);this.context.beginPath(),this.context.arc(e.x,e.y,this.options.markerSize,0,2*Math.PI,!1),this.context.fillStyle=this.options.markerColor,this.context.fill()}},o.Projection={RADIUS:6378137,MAX:85.0511287798,RADIANS:Math.PI/180,mercator:function(t,i){var e={};return e.x=this.RADIUS*i*this.RADIANS,e.y=Math.max(Math.min(this.MAX,t),-this.MAX)*this.RADIANS,e.y=this.RADIUS*Math.log(Math.tan(Math.PI/4+e.y/2)),e}},o});
\ No newline at end of file
+!function(t,i){"use strict";"function"==typeof define&&define.amd?define(["exports"],function(e){t.Smallworld=i(t,e)}):"undefined"!=typeof exports?i(t,exports):t.Smallworld=i(t)}(this,function(t){"use strict";function i(t){for(var i=1;i<arguments.length;i++){var e=arguments[i];for(var o in e)void 0===t[o]&&(t[o]=e[o])}return t}t.requestAnimFrame=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||function(t){window.setTimeout(t,1e3/60)}}();var e={zoom:0,center:[0,0],waterColor:"#b3d1ff",landColor:"#fff",markerColor:"#333",markerSize:5},o=function(t,s){if(!t)throw new Error("A DOM element is required for Smallworld to initialize");if(this.el=t,this.options=i(s||{},e,o.defaults),!this.options.geojson)throw new Error("A GeoJSON source is required for Smallworld to initialize");this.initialize.apply(this),this.draw()};return o.defaults={},o.prototype={initialize:function(){this.width=this.el.clientWidth,this.height=this.el.clientHeight,this.tile=new o.Tile(this.options),this.map=this.createMap(this.width,this.height),this.context=this.map.getContext("2d"),this.el.appendChild(this.map),this.draw()},createMap:function(t,i){var e=document.createElement("canvas");return e.width=t,e.height=i,e.style.position="absolute",e.style.top=0,e.style.left=0,e},getTile:function(){return new o.Tile(arguments)},resize:function(){this.map.width=this.width,this.map.height=this.height},draw:function(){var t,i,e,o,s;for(this.context.fillStyle=this.options.waterColor,this.context.fillRect(0,0,this.width,this.height),t=Math.ceil(this.width/2-this.tile.center.x),i=Math.ceil(this.height/2-this.tile.center.y),e=Math.ceil(t/this.tile.width),o=Math.ceil((this.width-(t+this.tile.width))/this.tile.width),s=1;e>=s;s++)this.context.drawImage(this.tile.el,t-this.tile.width*s,i);for(s=1;o>=s;s++)this.context.drawImage(this.tile.el,t+this.tile.width*s,i);if(this.context.drawImage(this.tile.el,t,i),this.options.marker)this.tile.addMarker(this.options.marker===!0?this.options.center:this.options.marker);else if(this.options.markers)for(var n=0;n<this.options.markers.length;n++)this.tile.addMarker(this.options.markers[n])}},o.Tile=function(t){this.options=i(t||{},e),this.initialize.apply(this)},o.Tile.prototype={initialize:function(){this.geojson=this.options.geojson.features||this.options.geojson,this.scale=Math.pow(2,parseInt(this.options.zoom)),this.bounds=this.getBounds(),this.width=Math.ceil(256*this.scale),this.height=Math.ceil(this.width/1.041975309),this.center=this.coordinateToPoint(this.options.center[0],this.options.center[1]),this.el=document.createElement("canvas"),this.el.width=this.width,this.el.height=this.height,this.context=this.el.getContext("2d"),this.draw()},getBounds:function(){for(var t,i,e={},o=0;o<this.geojson.length;o++){t=this.geojson[o].geometry.coordinates[0];for(var s=0;s<t.length;s++)i=this.projectCoordinate(t[s][1],t[s][0]),e.xMin=e.xMin<i.x?e.xMin:i.x,e.xMax=e.xMax>i.x?e.xMax:i.x,e.yMin=e.yMin<i.y?e.yMin:i.y,e.yMax=e.yMax>i.y?e.yMax:i.y}return e},draw:function(){this.context.fillStyle=this.options.landColor;for(var t=0;t<this.geojson.length;t++){for(var i=this.geojson[t].geometry.coordinates[0],e=0;e<i.length;e++){var o=this.coordinateToPoint(i[e][1],i[e][0]);0===e?(this.context.beginPath(),this.context.moveTo(o.x,o.y)):this.context.lineTo(o.x,o.y)}this.context.fill()}},coordinateToPoint:function(t,i){var e=this.projectCoordinate(t,i),o=this.width/Math.abs(this.bounds.xMax-this.bounds.xMin),s=this.height/Math.abs(this.bounds.yMax-this.bounds.yMin),n=s>o?o:s;return{x:(e.x-this.bounds.xMin)*n,y:(this.bounds.yMax-e.y)*n}},projectCoordinate:function(t,i){var e=o.Projection.mercator(t,i);return e.x=e.x*this.scale,e.y=e.y*this.scale,e},addMarker:function(t,i){if(t instanceof Array||"number"==typeof t)this.pAddMarker(t,i);else{i=i||{};var e={};e=JSON.parse(JSON.stringify(i)),void 0!==t.markerColor&&(e.markerColor=t.markerColor),void 0!==t.markerSize&&(e.markerSize=t.markerSize);for(var o=0;o<t.values.length;o++)this.pAddMarker(t.values[o],e)}},pAddMarker:function(t,i){i=i||{};var e=this.coordinateToPoint(t[0],t[1]),o=i.markerSize||this.options.markerSize,s=i.markerColor||this.options.markerColor;this.context.beginPath(),this.context.arc(e.x,e.y,o,0,2*Math.PI,!1),this.context.fillStyle=s,this.context.fill()}},o.Projection={RADIUS:6378137,MAX:85.0511287798,RADIANS:Math.PI/180,mercator:function(t,i){var e={};return e.x=this.RADIUS*i*this.RADIANS,e.y=Math.max(Math.min(this.MAX,t),-this.MAX)*this.RADIANS,e.y=this.RADIUS*Math.log(Math.tan(Math.PI/4+e.y/2)),e}},o});
\ No newline at end of file
diff --git a/index.html b/index.html
index 6ad6d13..7d60af2 100644
--- a/index.html
+++ b/index.html
@@ -142,6 +142,41 @@ <h3>Markers</h3>
 			</div>
 		</div>
 
+		<div class="example">
+			<div class="example__map">
+				<div class="map js-marker-group"></div>
+			</div>
+
+			<div class="example__code">
+				<pre><code class="language-javascript">$('.map').smallworld({
+	center: [45, -50],
+	markers: [
+		{
+			values: [
+	  			[37.757719928168605, -122.43760000000003],
+				[51.528868434293145, -0.10159864999991441]
+	  		],
+	  		markerColor: 'blue',
+	  		markerSize: 3
+	  	},
+	  	{
+	  		values: [
+	  			[40.705960705452846, -73.9780035]
+	  		]
+	  		// use default color and size
+	  	},
+	  	{
+	  		values: [
+	  			[-27.757719928168605, 122.43760000000003]
+	  		],
+	  		markerColor: 'red'
+	  	}
+	],
+	markerColor: 'black'
+});</code></pre>
+			</div>
+		</div>
+
 		<!-- STANDALONE -->
 
 		<h3>Using without jQuery/Zepto</h3>
diff --git a/src/smallworld.js b/src/smallworld.js
index cd9a5e1..9a69991 100644
--- a/src/smallworld.js
+++ b/src/smallworld.js
@@ -285,16 +285,40 @@
     },
 
     addMarker: function (point, options) {
-  
+
+      // check if 'point' is a group of markers
+      if (!(point instanceof Array) && typeof(point) !== "number") {
+        options = options || {};
+        // make a deep copy
+        var groupOptions = {};
+        groupOptions = JSON.parse(JSON.stringify(options));
+        if (point.markerColor !== undefined) {
+          groupOptions.markerColor = point.markerColor;
+        }
+        if (point.markerSize !== undefined) {
+          groupOptions.markerSize = point.markerSize;
+        }
+        for (var i = 0; i < point.values.length; i++) {
+          this.pAddMarker(point.values[i], groupOptions);
+        }
+      } else {
+        this.pAddMarker(point, options);
+      }
+
+    },
+
+    pAddMarker: function (point, options) {
       options = options || {};
 
       var center = this.coordinateToPoint(point[0], point[1]);
-        
+
+      var markerSize = options.markerSize || this.options.markerSize;
+      var markerColor = options.markerColor || this.options.markerColor;
+
       this.context.beginPath();
-      this.context.arc(center.x, center.y, this.options.markerSize, 0, 2 * Math.PI, false);
-      this.context.fillStyle = this.options.markerColor;
+      this.context.arc(center.x, center.y, markerSize, 0, 2 * Math.PI, false);
+      this.context.fillStyle = markerColor;
       this.context.fill();
-
     }
 
   };