diff --git a/www/js/auth.js b/www/js/auth.js
index b5d7ea6..b15ded9 100644
--- a/www/js/auth.js
+++ b/www/js/auth.js
@@ -36,7 +36,7 @@ function askLogout() {
 }
 
 function logout() {
-    $.getJSON(mkApiUrl('deletesession'), {}, function (data) {
+    $.getJSON(mkApiUrl('deletesession') + "?lang=" + USER_LANGUAGE, {}, function (data) {
         if (data.status === 'OK') {
             localStorage.setItem("username", '');
             localStorage.setItem("password", '');
@@ -54,7 +54,8 @@ function logout() {
 var teamchoosercheckretried = false;
 function checkUserHasTeamOpenChooserIfNot(username) {
     $.getJSON(mkApiUrl('getstats'), {
-        user: username
+        user: username,
+        lang: USER_LANGUAGE
     }, function (data) {
         if (data.status === 'OK') {
             if (data.stats.teamid && data.stats.teamid > 0) {
@@ -118,7 +119,8 @@ function dosignup() {
                 user: $('#usernameBox').val(),
                 pass: $('#passwordBox').val(),
                 name: $('#nameBox').val(),
-                email: $('#emailBox').val()
+                email: $('#emailBox').val(),
+                lang: USER_LANGUAGE
             },
             function (data) {
                 if (data === 'OK') {
@@ -126,6 +128,7 @@ function dosignup() {
                     $.post(mkApiUrl('login'), {
                         user: $('#usernameBox').val(),
                         pass: $('#passwordBox').val(),
+                        lang: USER_LANGUAGE
                     }, function (out) {
                         if (out.status === 'OK') {
                             loginOK();
@@ -175,7 +178,8 @@ function dologin() {
     $.post(mkApiUrl("login"),
             {
                 user: $('#usernameBox').val(),
-                pass: $('#passwordBox').val()
+                pass: $('#passwordBox').val(),
+                lang: USER_LANGUAGE
             },
             function (data) {
                 if (data.status === 'OK') {
diff --git a/www/js/location.js b/www/js/location.js
index b003cec..b2b180d 100644
--- a/www/js/location.js
+++ b/www/js/location.js
@@ -139,7 +139,7 @@ function loadPlaces(lat, long) {
     if (!lockGot) {
         return;
     }
-    var url = mkApiUrl('places', 'gs') + "?lat=" + lat + "&long=" + long + "&radius=.5&names=1";
+    var url = mkApiUrl('places', 'gs') + "?lat=" + lat + "&long=" + long + "&radius=.5&names=1&lang=" + USER_LANGUAGE;
     try {
         $.getJSON(
                 url,
@@ -196,7 +196,7 @@ var updatePosition = function (position) {
 
 function pingServer() {
     if (lockGot && gpsaccuracy < requiredaccuracy) {
-        $.getJSON(mkApiUrl('ping') + "?user=" + username + "&lat=" + latitude + "&long=" + longitude, function (data) {
+        $.getJSON(mkApiUrl('ping') + "?user=" + username + "&lat=" + latitude + "&long=" + longitude  + "&lang=" + USER_LANGUAGE, function (data) {
             if (data.status == "ERROR" && logoutInProgress != true) {
                 localStorage.setItem("no_autologin", "true");
                 username = null;
diff --git a/www/js/main.js b/www/js/main.js
index 99e9cfc..1b19b20 100644
--- a/www/js/main.js
+++ b/www/js/main.js
@@ -27,6 +27,8 @@ MUNZEE_CLIENT_ID = '616cecc70e17f4a3cb64146dce2d33f5';
 MUNZEE_REDIRECT = 'http://gs.terranquest.net/munzee.php';
 CODE_SCAN_COOLDOWN_SECONDS = 15; // Also change in CSS (.cooldown-fade-anim)
 
+USER_LANGUAGE = "en-US";
+
 currentscreen = "";
 /*
  * Runs when the app opens
@@ -54,6 +56,16 @@ function onDeviceReady() {
             }
         }
     });
+    setLocale();
+}
+
+function setLocale() {
+    navigator.globalization.getPreferredLanguage(
+            function (language) {
+                USER_LANGUAGE = language.value;
+            },
+            function () {}
+    );
 }
 
 // Depending on the device, a few examples are:
diff --git a/www/js/shop.js b/www/js/shop.js
index 8d25bcb..f271aa6 100644
--- a/www/js/shop.js
+++ b/www/js/shop.js
@@ -25,7 +25,8 @@ function buycoins(productId) {
                         os: 'android',
                         data: data.receipt,
                         signature: data.signature,
-                        id: productId
+                        id: productId,
+                        lang: USER_LANGUAGE
                     }, function (result) {
                         if (result.status == 'OK') {
                             return inAppPurchase.consume(data.type, data.receipt, data.signature);
@@ -53,7 +54,8 @@ function buycoins(productId) {
                         os: 'ios',
                         data: data.receipt,
                         signature: data.signature,
-                        id: productId
+                        id: productId,
+                        lang: USER_LANGUAGE
                     }, function (result) {
                         if (result.status == 'OK') {
                             return inAppPurchase.consume(data.type, data.receipt, data.signature);
@@ -81,7 +83,8 @@ function buyitem(id, cost) {
     $('#shopitem-' + id).prop('onclick', null).off('click');
     $.getJSON(mkApiUrl('buyitem', 'gs'), {
         merchid: id,
-        cost: cost
+        cost: cost,
+        lang: USER_LANGUAGE
     }, function (data) {
         if (data.status == 'OK') {
             showSuccessMessage(data.message);
@@ -142,7 +145,7 @@ function setcoinhtmlfromiap(coinsjson) {
 }
 
 function loadstorefront() {
-    $.getJSON(mkApiUrl('shopitems'), function (data) {
+    $.getJSON(mkApiUrl('shopitems') + "?lang=" + USER_LANGUAGE, function (data) {
         var content = "";
         if (data.status == 'OK') {
             var items = data.items;
@@ -163,7 +166,7 @@ function loadstorefront() {
 }
 
 function refreshcoins() {
-    $.getJSON(mkApiUrl('shopitems'), function (data) {
+    $.getJSON(mkApiUrl('shopitems') + "?lang=" + USER_LANGUAGE, function (data) {
         if (data.status == 'OK') {
             $('#coinbalance').text(data.balance);
         }
diff --git a/www/js/user.js b/www/js/user.js
index d951930..ddb14db 100644
--- a/www/js/user.js
+++ b/www/js/user.js
@@ -33,7 +33,8 @@ var terrainName = "Other";
  */
 function syncStats() {
     $.getJSON(mkApiUrl('getstats'), {
-        user: username
+        user: username,
+        lang: USER_LANGUAGE
     }, function (data) {
         if (data.status === 'OK') {
             maxenergy = data.stats.maxenergy;
@@ -57,7 +58,8 @@ function getChat() {
         $.getJSON(mkApiUrl('chat', 'cs'), {
             lat: latitude,
             long: longitude,
-            name: username
+            name: username,
+            lang: USER_LANGUAGE
         }, function (data) {
             data = sortResults(data, 'time', true);
             var content = "";
@@ -79,7 +81,7 @@ function getChat() {
 
 function privMsgSync() {
     $.getJSON(
-            mkApiUrl('privmsgs') + "?filter=unread",
+            mkApiUrl('privmsgs') + "?filter=unread&lang=" + USER_LANGUAGE,
             function (data) {
                 if (data.status === 'OK') {
                     if (data.msgs.length > 0) {
@@ -98,7 +100,8 @@ skycons.add("weathericon", "clear-day");
 function getWeather() {
     $.getJSON(mkApiUrl('getweather'), {
         lat: latitude,
-        long: longitude
+        long: longitude,
+        lang: USER_LANGUAGE
     }, function (data) {
         var currently = data.currently;
         rawWeatherData = currently;
@@ -110,7 +113,8 @@ function getWeather() {
 function getTerrain() {
     $.getJSON(mkApiUrl('getterrain'), {
         lat: latitude,
-        long: longitude
+        long: longitude,
+        lang: USER_LANGUAGE
     }, function (data) {
         var terrainid = -1;
         var terrainstr = "Other";
@@ -159,7 +163,8 @@ $("#chatsendform").submit(function (event) {
             lat: latitude,
             long: longitude,
             msg: message,
-            name: username
+            name: username,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 $('#chatbox-input').val("");
diff --git a/www/screens/chooseteam.html b/www/screens/chooseteam.html
index 5ff3381..0b5b1e5 100644
--- a/www/screens/chooseteam.html
+++ b/www/screens/chooseteam.html
@@ -50,7 +50,8 @@
         //alert($('input[name=teamChooser]:checked').val());
         var team = $('input[name=teamChooser]:checked').val();
         $.getJSON(mkApiUrl('setteam', 'gs'), {
-            teamid: team
+            teamid: team,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 // We're all good.
diff --git a/www/screens/home.html b/www/screens/home.html
index 21f8518..3fabaf9 100644
--- a/www/screens/home.html
+++ b/www/screens/home.html
@@ -169,7 +169,8 @@
                             os: 'android',
                             data: prod.receipt,
                             signature: prod.signature,
-                            id: prod.productId
+                            id: prod.productId,
+                            lang: USER_LANGUAGE
                         }, function (result) {
                             if (result.status == 'OK') {
                                 inAppPurchase.consume(prod.type, prod.receipt, prod.signature);
diff --git a/www/screens/inventory.html b/www/screens/inventory.html
index 877d295..dda8991 100644
--- a/www/screens/inventory.html
+++ b/www/screens/inventory.html
@@ -46,7 +46,8 @@
         // Load the list of nearby players
         $.getJSON(mkApiUrl('nearby'), {
             lat: latitude,
-            long: longitude
+            long: longitude,
+            lang: USER_LANGUAGE
         }, function (data) {
             var content = "";
             if (data.status === 'OK') {
@@ -75,7 +76,8 @@
         }
         $.getJSON(mkApiUrl('giveitem', 'gs'), {
             giveto: playername,
-            itemuuid: uuid
+            itemuuid: uuid,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 loadinventory();
@@ -92,7 +94,8 @@
     function useitem(uuid) {
         $('#invitem-' + uuid).prop('onclick', null).off('click');
         $.getJSON(mkApiUrl('useitem', 'gs'), {
-            itemuuid: uuid
+            itemuuid: uuid,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 loadinventory();
@@ -132,7 +135,8 @@
 
     function loadinventory() {
         $.getJSON(mkApiUrl('inventory'), {
-            user: username
+            user: username,
+            lang: USER_LANGUAGE
         }, function (data) {
             var content = "";
             if (data.status == 'OK') {
diff --git a/www/screens/nearby.html b/www/screens/nearby.html
index ea4bbcd..dcca17e 100644
--- a/www/screens/nearby.html
+++ b/www/screens/nearby.html
@@ -36,7 +36,8 @@
     function loadnearby() {
         $.getJSON(mkApiUrl('nearby'), {
             lat: latitude,
-            long: longitude
+            long: longitude,
+            lang: USER_LANGUAGE
         }, function (data) {
             var content = "";
             if (data.status === 'OK') {
diff --git a/www/screens/place.html b/www/screens/place.html
index 6ee3d7b..34cb0fd 100644
--- a/www/screens/place.html
+++ b/www/screens/place.html
@@ -87,7 +87,8 @@
     function resync(firstload) {
         $('#place-refresh').addClass('fa-spin');
         $.getJSON(mkApiUrl('getstats', 'gs'), {
-            user: username
+            user: username,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 maxenergy = data.stats.maxenergy;
@@ -99,7 +100,8 @@
             }
         });
         $.getJSON(mkApiUrl('placestats', 'gs'), {
-            locationid: thisplace.properties.gameinfo.locationid
+            locationid: thisplace.properties.gameinfo.locationid,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 placeteam = data.stats.teamid;
@@ -167,7 +169,8 @@
         $.getJSON(mkApiUrl('attackplace', 'gs'), {
             locationid: thisplace.properties.gameinfo.locationid,
             lat: latitude,
-            long: longitude
+            long: longitude,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 $('#capturebtn').text(data.message);
@@ -205,7 +208,8 @@
         $.getJSON(mkApiUrl('refillplace', 'gs'), {
             locationid: thisplace.properties.gameinfo.locationid,
             lat: latitude,
-            long: longitude
+            long: longitude,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 $('#refillbtn').text(data.message);
@@ -241,7 +245,8 @@
         $.getJSON(mkApiUrl('claimplace', 'gs'), {
             locationid: thisplace.properties.gameinfo.locationid,
             lat: latitude,
-            long: longitude
+            long: longitude,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK') {
                 $('#capturebtn').text(data.message);
diff --git a/www/screens/profile.html b/www/screens/profile.html
index 4022876..535a439 100644
--- a/www/screens/profile.html
+++ b/www/screens/profile.html
@@ -72,7 +72,8 @@
         if (message !== '') {
             $.post(mkApiUrl('privmsgs'), {
                 msg: message,
-                to: toplayer
+                to: toplayer,
+                lang: USER_LANGUAGE
             }, function (data) {
                 if (data.status === 'OK') {
                     $('#privmsgbox').val("");
@@ -89,7 +90,8 @@
 
     function loadPlayerStats(user) {
         $.getJSON(mkApiUrl('getstats'), {
-            user: user
+            user: user,
+            lang: USER_LANGUAGE
         }, function (data) {
             if (data.status === 'OK' && data.stats != null) {
                 if (data.stats.level != null) {
@@ -121,7 +123,7 @@
         $('#loading-badges').html('<i class="fa fa-spinner fa-pulse"></i> Loading...');
         $('#loading-badges').css('display', 'block');
         $.getJSON(
-                mkApiUrl('getbadges') + '?user=' + user,
+                mkApiUrl('getbadges') + '?user=' + user + "&lang=" + USER_LANGUAGE,
                 function (data) {
                     if (data.status === 'OK') {
                         data.badges.forEach(function (item) {
@@ -149,7 +151,7 @@
         $('#privmsg-box').css('display', 'block');
         $('#privmsgs').css('display', 'block');
         $.getJSON(
-                mkApiUrl('privmsgs'),
+                mkApiUrl('privmsgs') + "?lang=" + USER_LANGUAGE,
                 function (data) {
                     if (data.status === 'OK') {
                         $('#privmsgs').html("");