diff --git a/features.js b/features.js
index ce87840..04c7c25 100644
--- a/features.js
+++ b/features.js
@@ -843,11 +843,20 @@ options = [
     "entries":
     [
       {
-        "name": "Digestion time",
-        "id": "oralDigestTime",
-        "type": "float",
-        "default": "15"
-      },
+        "name": "Automatic digestion",
+        "id": "oralDigestAuto",
+        "type": "subcategory",
+        "default": true,
+        "entries":
+        [
+          {
+            "name": "Digestion time",
+            "id": "oralDigestTime",
+            "type": "float",
+            "default": "15"
+          }
+        ]
+      },      
       {
         "name": "Manual digestion",
         "id": "oralDigestManual",
@@ -884,11 +893,20 @@ options = [
         "unit": "length"
       },
       {
-        "name": "Digestion time",
-        "id": "analDigestTime",
-        "type": "float",
-        "default": "15"
-      },
+        "name": "Automatic digestion",
+        "id": "analDigestAuto",
+        "type": "subcategory",
+        "default": true,
+        "entries":
+        [
+          {
+            "name": "Digestion time",
+            "id": "analDigestTime",
+            "type": "float",
+            "default": "15"
+          }
+        ]
+      },  
       {
         "name": "Anal autogrowth factor",
         "id": "assGrowthFactor",
@@ -1068,11 +1086,20 @@ options = [
             "tooltip": "How much this part grows during part specific digestion. This is relative to overall growth, [1]:all mass goes to this part [.2]:20% part growth-80% overall growth."
           },
           {
-            "name": "Digestion time",
-            "id": "tailDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "tailDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "tailDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "tailDigestManual",
@@ -1201,11 +1228,20 @@ options = [
             "default": "1"
           },
           {
-            "name": "Digestion time",
-            "id": "cockDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "cockDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "cockDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "cockDigestManual",
@@ -1356,11 +1392,20 @@ options = [
             "tooltip": "How much this part grows during part specific digestion. This is relative to overall growth, [1]:all mass goes to this part [.2]:20% part growth-80% overall growth."
           },
           {
-            "name": "Digestion time",
-            "id": "unbirthDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "unbirthDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "unbirthDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "unbirthDigestManual",
@@ -1470,11 +1515,20 @@ options = [
             "tooltip": "How much this part grows during part specific digestion. This is relative to overall growth, [1]:all mass goes to this part [.2]:20% part growth-80% overall growth."
           },
           {
-            "name": "Digestion time",
-            "id": "breastDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "breastDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "breastDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "breastDigestManual",
@@ -1594,11 +1648,20 @@ options = [
         "tooltip": "How much you grow when absorbing souls. [1]-you will gain equal mass to the souls you absorb. [.01]- you will grow by 1% of the mass of the souls you absorb. This does not stack with Prey growth factor"
       },
       {
-        "name": "Digestion time",
-        "id": "soulDigestTime",
-        "type": "float",
-        "default": "15"
-      },
+        "name": "Automatic digestion",
+        "id": "soulDigestAuto",
+        "type": "subcategory",
+        "default": true,
+        "entries":
+        [
+          {
+            "name": "Digestion time",
+            "id": "soulDigestTime",
+            "type": "float",
+            "default": "15"
+          }
+        ]
+      },  
       {
         "name": "Manual digestion",
         "id": "soulDigestManual",
@@ -1677,11 +1740,20 @@ options = [
             "default": "1"
           },
           {
-            "name": "Digestion time",
-            "id": "bladderDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "bladderDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "bladderDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "bladderDigestManual",
@@ -1763,11 +1835,20 @@ options = [
             "tooltip": "How much you grow when absorbing people via goo. [1]-you will gain equal mass to the souls you absorb. [.01]- you will grow by 1% of the mass of the souls you absorb. This does not stack with Prey growth factor"
           },
           {
-            "name": "Digestion time",
-            "id": "gooDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "gooDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "gooDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "gooDigestManual",
@@ -1792,11 +1873,20 @@ options = [
         "tooltip": "How much this part grows during part specific digestion. This is relative to overall growth, [1]:all mass goes to this part [.2]:20% part growth-80% overall growth."
       },
       {
-        "name": "Digestion time",
-        "id": "pawDigestTime",
-        "type": "float",
-        "default": "15"
-      },
+        "name": "Automatic digestion",
+        "id": "pawDigestAuto",
+        "type": "subcategory",
+        "default": true,
+        "entries":
+        [
+          {
+            "name": "Digestion time",
+            "id": "pawDigestTime",
+            "type": "float",
+            "default": "15"
+          }
+        ]
+      },  
       {
         "name": "Manual digestion",
         "id": "pawDigestManual",
@@ -1819,11 +1909,20 @@ options = [
     "entries":
     [
       {
-        "name": "Transfer time",
-        "id": "cropTransferTime",
-        "type": "float",
-        "default": "10"
-      }
+        "name": "Automatic transfer",
+        "id": "cropTransferAuto",
+        "type": "subcategory",
+        "default": true,
+        "entries":
+        [
+          {
+            "name": "Digestion time",
+            "id": "cropTransferTime",
+            "type": "float",
+            "default": "10"
+          }
+        ]
+      },  
     ]
   },
   {
@@ -1964,11 +2063,20 @@ options = [
             "tooltip": "How much this part grows during part specific digestion. This is relative to overall growth, [1]:all mass goes to this part [.2]:20% part growth-80% overall growth."
           },
           {
-            "name": "Digestion time",
-            "id": "wingDigestTime",
-            "type": "float",
-            "default": "15"
-          },
+            "name": "Automatic digestion",
+            "id": "wingDigestAuto",
+            "type": "subcategory",
+            "default": true,
+            "entries":
+            [
+              {
+                "name": "Digestion time",
+                "id": "wingDigestTime",
+                "type": "float",
+                "default": "15"
+              }
+            ]
+          },  
           {
             "name": "Manual digestion",
             "id": "wingDigestManual",
diff --git a/game.js b/game.js
index 4d26137..bec68d7 100644
--- a/game.js
+++ b/game.js
@@ -527,10 +527,12 @@ let macro = //macro controls every customizable part of the players body
     return this.scaling(this.droolBaseVolume / 1000 , this.scale, 3);
   },
 
-  "digest": function(owner, organ, time=15) {
+  "digest": function(owner, organ, time=15, auto=true) {
 
-    // ignore if using manual digestion
-    if (time != 0) {
+    // we now have an explicit no-auto-digest flag, but
+    // some saves will wind up a time of 0 anyway, so I'll
+    // just leave this here to keep that from breaking things
+    if (auto && time != 0) {
       setTimeout(function() { owner.digest(owner, organ, time); }, time * 1000 / organ.stages / macro.fastDigestFactor);
     }
 
@@ -560,7 +562,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.oralDigestTime);
+      owner.digest(owner, this, owner.oralDigestTime, owner.oralDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -609,7 +611,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.tailDigestTime);
+      owner.digest(owner, this, owner.tailDigestTime, owner.tailDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -664,7 +666,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.analDigestTime);
+      owner.digest(owner, this, owner.analDigestTime, owner.analDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -724,7 +726,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.unbirthDigestTime);
+      owner.digest(owner, this, owner.unbirthDigestTime, owner.unbirthDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -778,7 +780,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.cockDigestTime);
+      owner.digest(owner, this, owner.cockDigestTime, owner.cockDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -832,7 +834,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.breastDigestTime);
+      owner.digest(owner, this, owner.breastDigestTime, owner.breastDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -887,7 +889,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.bladderDigestTime);
+      owner.digest(owner, this, owner.bladderDigestTime, owner.bladderDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -933,7 +935,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.soulDigestTime);
+      owner.digest(owner, this, owner.soulDigestTime, owner.soulDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -979,7 +981,7 @@ let macro = //macro controls every customizable part of the players body
         this.contents.push(new Container());
 
       if (owner.gooDigestion) {
-        owner.digest(owner, this, owner.gooDigestTime);
+        owner.digest(owner, this, owner.gooDigestTime, owner.gooDigestAuto);
       }
 
     },
@@ -1028,7 +1030,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.pawDigestTime);
+      owner.digest(owner, this, owner.pawDigestTime, owner.pawDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -1068,7 +1070,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.cropTransferTime);
+      owner.digest(owner, this, owner.cropTransferTime, owner.cropTransferAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
@@ -1111,7 +1113,7 @@ let macro = //macro controls every customizable part of the players body
       this.owner = owner;
       for (let i = 0; i < this.stages; i++)
         this.contents.push(new Container());
-      owner.digest(owner, this, owner.wingDigestTime);
+      owner.digest(owner, this, owner.wingDigestTime, owner.wingDigestAuto);
     },
     "feed": function(prey) {
       this.feedFunc(prey,this,this.owner);
diff --git a/migrations.js b/migrations.js
index cb0c4e1..40b631f 100644
--- a/migrations.js
+++ b/migrations.js
@@ -1,9 +1,42 @@
 // bumps save versions
 
 migrations = [
-  (save) => {
-    // does nothing
+  // 0 -> 1
+  
+  // does nothing
+  save => {
+  },
+  // 1 -> 2
+
+  // automatic digestion is now a subcategory, so anyone with
+  // a digest time of 0 should have that unset
+  save => {
+    if (save.oralDigestTime == 0)
+      save.oralDigestAuto = false;
+    if (save.analDigestTime == 0)
+      save.analDigestAuto = false;
+    if (save.tailDigestTime == 0)
+      save.tailDigestAuto = false;
+    if (save.cockDigestTime == 0)
+      save.cockDigestAuto = false;
+    if (save.unbirthDigestTime == 0)
+      save.unbirthDigestAuto = false;
+    if (save.breastDigestTime == 0)
+      save.breastDigestAuto = false;
+    if (save.soulDigestTime == 0)
+      save.soulDigestAuto = false;
+    if (save.bladderDigestTime == 0)
+      save.bladderDigestAuto = false;
+    if (save.gooDigestTime == 0)
+      save.gooDigestAuto = false;
+    if (save.pawDigestTime == 0)
+      save.pawDigestAuto = false;
+    if (save.cropTransferTime == 0)
+      save.cropTransferAuto = false;
+    if (save.wingDigestTime == 0)
+      save.wingDigestAuto = false;
   }
+
 ];
 
 function migrate(save, target=null) {
@@ -29,6 +62,7 @@ function migrate(save, target=null) {
     for (let x = version; x < target; x++) {
       migrations[x](save);
     }
+    save.version = target;
   } else {
     return false;
   }