--- a/data/json/npcs/appearance_trait_groups.json
+++ b/data/json/npcs/appearance_trait_groups.json
@@ -19,49 +19,49 @@
     "type": "trait_group",
     "id": "Appearance_Irish",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Irish", "prob": 100 }, { "group": "Skin_Fair", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Irish", "prob": 100 }, { "group": "Skin_Fair", "prob": 100 }, { "group": "Eye_light", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_Caucasian",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Any", "prob": 100 }, { "group": "Skin_White", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Any", "prob": 100 }, { "group": "Skin_White", "prob": 100 }, { "group": "Eye_any", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_Germanic",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Fair", "prob": 100 }, { "group": "Skin_Fair", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Fair", "prob": 100 }, { "group": "Skin_Fair", "prob": 100 }, { "group": "Eye_light", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_Latin",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "group": "Skin_Medium", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "group": "Skin_Medium", "prob": 100 }, { "group": "Eye_dark", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_African",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "group": "Skin_Dark", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "group": "Skin_Dark", "prob": 100 }, { "group": "Eye_dark", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_EastAsian",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "trait": "SKIN_TAN", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "trait": "SKIN_TAN", "prob": 100 }, { "group": "Eye_dark", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_SouthAsian",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "trait": "SKIN_TAN", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Dark", "prob": 100 }, { "trait": "SKIN_TAN", "prob": 100 }, { "group": "Eye_dark", "prob": 100 } ]
   },
   {
     "type": "trait_group",
     "id": "Appearance_Mixed",
     "subtype": "collection",
-    "traits": [ { "group": "Hair_Any", "prob": 100 }, { "group": "Skin_Any", "prob": 100 } ]
+    "traits": [ { "group": "Hair_Any", "prob": 100 }, { "group": "Skin_Any", "prob": 100 }, { "group": "Eye_any", "prob": 100 } ]
   },
   {
     "type": "trait_group",
@@ -155,6 +155,31 @@
   },
   {
     "type": "trait_group",
+    "id": "Eye_light",
+    "subtype": "distribution",
+    "traits": [ { "trait": "eye_blue", "prob": 55 }, { "trait": "eye_gray", "prob": 25 }, { "trait": "eye_green", "prob": 15 } ]
+  },
+  {
+    "type": "trait_group",
+    "id": "Eye_dark",
+    "subtype": "distribution",
+    "traits": [ { "trait": "eye_brown", "prob": 60 }, { "trait": "eye_hazel", "prob": 20 }, { "trait": "eye_amber", "prob": 20 } ]
+  },
+  {
+    "type": "trait_group",
+    "id": "Eye_any",
+    "subtype": "distribution",
+    "traits": [
+      { "trait": "eye_brown", "prob": 70 },
+      { "trait": "eye_hazel", "prob": 9 },
+      { "trait": "eye_amber", "prob": 8 },
+      { "trait": "eye_blue", "prob": 8 },
+      { "trait": "eye_gray", "prob": 3 },
+      { "trait": "eye_green", "prob": 2 }
+    ]
+  },
+  {
+    "type": "trait_group",
     "id": "Hair_Black",
     "subtype": "distribution",
     "traits": [
--- a/data/json/mutations/mutation_appearance.json
+++ b/data/json/mutations/mutation_appearance.json
@@ -477,6 +513,78 @@
     "types": [ "hair_style" ]
   },
   {
+    "id": "eye_blue",
+    "type": "mutation",
+    "name": { "str": "Eye color: blue" },
+    "description": "You have blue eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
+    "id": "eye_brown",
+    "type": "mutation",
+    "name": { "str": "Eye color: brown" },
+    "description": "You have brown eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
+    "id": "eye_hazel",
+    "type": "mutation",
+    "name": { "str": "Eye color: hazel" },
+    "description": "You have hazel eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
+    "id": "eye_amber",
+    "type": "mutation",
+    "name": { "str": "Eye color: amber" },
+    "description": "You have amber eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
+    "id": "eye_gray",
+    "type": "mutation",
+    "name": { "str": "Eye color: gray" },
+    "description": "You have gray eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
+    "id": "eye_green",
+    "type": "mutation",
+    "name": { "str": "Eye color: green" },
+    "description": "You have green eyes.",
+    "points": 0,
+    "starting_trait": true,
+    "valid": false,
+    "purifiable": false,
+    "player_display": false,
+    "types": [ "eye_color" ]
+  },
+  {
     "id": "SKIN_DARK",
     "type": "mutation",
     "name": { "str": "Skin tone: dark brown" },
--- a/data/json/mutations/mutation_type.json
+++ b/data/json/mutations/mutation_type.json
@@ -69,6 +73,10 @@
   },
   {
     "type": "mutation_type",
+    "id": "eye_color"
+  },
+  {
+    "type": "mutation_type",
     "id": "hair_style"
   },
   {