diff --git a/website/common/script/content/loginIncentives.js b/website/common/script/content/loginIncentives.js
index c878111b7c..cf16dc0888 100644
--- a/website/common/script/content/loginIncentives.js
+++ b/website/common/script/content/loginIncentives.js
@@ -289,23 +289,50 @@ export default function getLoginIncentives (api) {
       rewardName: 'oneOfAllPetEggs',
       assignReward: function assignReward (user) {
         if (!user.items.eggs.BearCub) user.items.eggs.BearCub = 0;
-        user.items.eggs.BearCub += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          BearCub: user.items.eggs.BearCub + 1,
+        };
         if (!user.items.eggs.Cactus) user.items.eggs.Cactus = 0;
-        user.items.eggs.Cactus += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Cactus: user.items.eggs.Cactus + 1,
+        };
         if (!user.items.eggs.Dragon) user.items.eggs.Dragon = 0;
-        user.items.eggs.Dragon += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Dragon: user.items.eggs.Dragon + 1,
+        };
         if (!user.items.eggs.FlyingPig) user.items.eggs.FlyingPig = 0;
-        user.items.eggs.FlyingPig += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          FlyingPig: user.items.eggs.FlyingPig + 1,
+        };
         if (!user.items.eggs.Fox) user.items.eggs.Fox = 0;
-        user.items.eggs.Fox += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Fox: user.items.eggs.Fox + 1,
+        };
         if (!user.items.eggs.LionCub) user.items.eggs.LionCub = 0;
-        user.items.eggs.LionCub += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          LionCub: user.items.eggs.LionCub + 1,
+        };
         if (!user.items.eggs.PandaCub) user.items.eggs.PandaCub = 0;
-        user.items.eggs.PandaCub += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          PandaCub: user.items.eggs.PandaCub + 1,
+        };
         if (!user.items.eggs.TigerCub) user.items.eggs.TigerCub = 0;
-        user.items.eggs.TigerCub += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          TigerCub: user.items.eggs.TigerCub + 1,
+        };
         if (!user.items.eggs.Wolf) user.items.eggs.Wolf = 0;
-        user.items.eggs.Wolf += 1;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Wolf: user.items.eggs.Wolf + 1,
+        };
         if (user.markModified) user.markModified('items.eggs');
       },
     },
@@ -587,23 +614,50 @@ export default function getLoginIncentives (api) {
       rewardName: 'twoOfAllPetEggs',
       assignReward: function assignReward (user) {
         if (!user.items.eggs.BearCub) user.items.eggs.BearCub = 0;
-        user.items.eggs.BearCub += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          BearCub: user.items.eggs.BearCub + 2,
+        };
         if (!user.items.eggs.Cactus) user.items.eggs.Cactus = 0;
-        user.items.eggs.Cactus += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Cactus: user.items.eggs.Cactus + 2,
+        };
         if (!user.items.eggs.Dragon) user.items.eggs.Dragon = 0;
-        user.items.eggs.Dragon += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Dragon: user.items.eggs.Dragon + 2,
+        };
         if (!user.items.eggs.FlyingPig) user.items.eggs.FlyingPig = 0;
-        user.items.eggs.FlyingPig += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          FlyingPig: user.items.eggs.FlyingPig + 2,
+        };
         if (!user.items.eggs.Fox) user.items.eggs.Fox = 0;
-        user.items.eggs.Fox += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Fox: user.items.eggs.Fox + 2,
+        };
         if (!user.items.eggs.LionCub) user.items.eggs.LionCub = 0;
-        user.items.eggs.LionCub += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          LionCub: user.items.eggs.LionCub + 2,
+        };
         if (!user.items.eggs.PandaCub) user.items.eggs.PandaCub = 0;
-        user.items.eggs.PandaCub += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          PandaCub: user.items.eggs.PandaCub + 2,
+        };
         if (!user.items.eggs.TigerCub) user.items.eggs.TigerCub = 0;
-        user.items.eggs.TigerCub += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          TigerCub: user.items.eggs.TigerCub + 2,
+        };
         if (!user.items.eggs.Wolf) user.items.eggs.Wolf = 0;
-        user.items.eggs.Wolf += 2;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Wolf: user.items.eggs.Wolf + 2,
+        };
         if (user.markModified) user.markModified('items.eggs');
       },
     },
@@ -652,23 +706,50 @@ export default function getLoginIncentives (api) {
       rewardName: 'threeOfAllPetEggs',
       assignReward: function assignReward (user) {
         if (!user.items.eggs.BearCub) user.items.eggs.BearCub = 0;
-        user.items.eggs.BearCub += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          BearCub: user.items.eggs.BearCub + 3,
+        };
         if (!user.items.eggs.Cactus) user.items.eggs.Cactus = 0;
-        user.items.eggs.Cactus += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Cactus: user.items.eggs.Cactus + 3,
+        };
         if (!user.items.eggs.Dragon) user.items.eggs.Dragon = 0;
-        user.items.eggs.Dragon += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Dragon: user.items.eggs.Dragon + 3,
+        };
         if (!user.items.eggs.FlyingPig) user.items.eggs.FlyingPig = 0;
-        user.items.eggs.FlyingPig += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          FlyingPig: user.items.eggs.FlyingPig + 3,
+        };
         if (!user.items.eggs.Fox) user.items.eggs.Fox = 0;
-        user.items.eggs.Fox += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Fox: user.items.eggs.Fox + 3,
+        };
         if (!user.items.eggs.LionCub) user.items.eggs.LionCub = 0;
-        user.items.eggs.LionCub += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          LionCub: user.items.eggs.LionCub + 3,
+        };
         if (!user.items.eggs.PandaCub) user.items.eggs.PandaCub = 0;
-        user.items.eggs.PandaCub += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          PandaCub: user.items.eggs.PandaCub + 3,
+        };
         if (!user.items.eggs.TigerCub) user.items.eggs.TigerCub = 0;
-        user.items.eggs.TigerCub += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          TigerCub: user.items.eggs.TigerCub + 3,
+        };
         if (!user.items.eggs.Wolf) user.items.eggs.Wolf = 0;
-        user.items.eggs.Wolf += 3;
+        user.items.eggs = {
+          ...user.items.eggs,
+          Wolf: user.items.eggs.Wolf + 3,
+        };
         if (user.markModified) user.markModified('items.eggs');
       },
     },
diff --git a/website/common/script/fns/randomDrop.js b/website/common/script/fns/randomDrop.js
index a3f8101424..50892c2d5a 100644
--- a/website/common/script/fns/randomDrop.js
+++ b/website/common/script/fns/randomDrop.js
@@ -91,8 +91,14 @@ export default function randomDrop (user, options, req = {}, analytics) {
     } else if (rarity > 0.3) { // eggs 30% chance
       drop = cloneDropItem(randomVal(content.dropEggs));
 
-      user.items.eggs[drop.key] = user.items.eggs[drop.key] || 0;
-      user.items.eggs[drop.key] += 1;
+      user.items.eggs = {
+        ...user.items.eggs,
+        [drop.key]: user.items.eggs[drop.key] || 0,
+      };
+      user.items.eggs = {
+        ...user.items.eggs,
+        [drop.key]: drop.key += 1,
+      };
       if (user.markModified) user.markModified('items.eggs');
 
       drop.type = 'Egg';
diff --git a/website/common/script/fns/updateStats.js b/website/common/script/fns/updateStats.js
index 49ca605959..7eb672eb24 100644
--- a/website/common/script/fns/updateStats.js
+++ b/website/common/script/fns/updateStats.js
@@ -71,9 +71,15 @@ export default function updateStats (user, stats, req = {}, analytics) {
     if (user.addNotification) user.addNotification('DROPS_ENABLED');
 
     if (user.items.eggs.Wolf > 0) {
-      user.items.eggs.Wolf += 1;
+      user.items.eggs = {
+        ...user.items.eggs,
+        Wolf: user.items.eggs.Wolf + 1,
+      };
     } else {
-      user.items.eggs.Wolf = 1;
+      user.items.eggs = {
+        ...user.items.eggs,
+        Wolf: 1,
+      };
     }
 
     if (user.markModified) user.markModified('items.eggs');
diff --git a/website/common/script/ops/hatch.js b/website/common/script/ops/hatch.js
index b0c6d6ea40..551ef89463 100644
--- a/website/common/script/ops/hatch.js
+++ b/website/common/script/ops/hatch.js
@@ -44,7 +44,10 @@ export default function hatch (user, req = {}) {
     ...user.items.pets,
     [pet]: 5,
   };
-  user.items.eggs[egg] -= 1;
+  user.items.eggs = {
+    ...user.items.eggs,
+    [egg]: user.items.eggs - 1,
+  };
   user.items.hatchingPotions[hatchingPotion] -= 1;
   if (user.markModified) {
     user.markModified('items.pets');