diff --git a/docs/src/progress/renderertodo.md b/docs/src/progress/renderertodo.md
index 6bc39d04..dee78054 100644
--- a/docs/src/progress/renderertodo.md
+++ b/docs/src/progress/renderertodo.md
@@ -1742,6 +1742,7 @@ Fix character bug with loading into level
 Multiple loot pool support
 Crops replace loot pool on completion of growth
 Display name for all common entity data
+Enitity id collision validation
 
 
 
diff --git a/src/main/java/electrosphere/data/ConfigValidator.java b/src/main/java/electrosphere/data/ConfigValidator.java
index 8c005353..a7eb5baf 100644
--- a/src/main/java/electrosphere/data/ConfigValidator.java
+++ b/src/main/java/electrosphere/data/ConfigValidator.java
@@ -1,7 +1,9 @@
 package electrosphere.data;
 
+import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 import electrosphere.data.common.CommonEntityType;
@@ -33,6 +35,45 @@ public class ConfigValidator {
         for(CommonEntityType type : allData){
             CommonEntityValidator.validate(type);
         }
+
+        ConfigValidator.checkIdCollisions(config);
+    }
+
+    /**
+     * Checks if there are any id collisions
+     * @param config The config
+     */
+    private static void checkIdCollisions(Config config){
+        //check for id collisions
+        Map<String,Boolean> occupancyMap = new HashMap<String,Boolean>();
+        for(CommonEntityType type : config.getObjectTypeMap().getTypes()){
+            if(occupancyMap.containsKey(type.getId())){
+                throw new Error("Entity id collision: " + type.getId());
+            } else {
+                occupancyMap.put(type.getId(),true);
+            }
+        }
+        for(CommonEntityType type : config.getCreatureTypeLoader().getTypes()){
+            if(occupancyMap.containsKey(type.getId())){
+                throw new Error("Entity id collision: " + type.getId());
+            } else {
+                occupancyMap.put(type.getId(),true);
+            }
+        }
+        for(CommonEntityType type : config.getFoliageMap().getTypes()){
+            if(occupancyMap.containsKey(type.getId())){
+                throw new Error("Entity id collision: " + type.getId());
+            } else {
+                occupancyMap.put(type.getId(),true);
+            }
+        }
+        for(CommonEntityType type : config.getItemMap().getTypes()){
+            if(occupancyMap.containsKey(type.getId())){
+                throw new Error("Entity id collision: " + type.getId());
+            } else {
+                occupancyMap.put(type.getId(),true);
+            }
+        }
     }
 
 }