diff --git a/src/builder/java/speiger/src/builder/GlobalVariables.java b/src/builder/java/speiger/src/builder/GlobalVariables.java
index edc3cbb2..02565533 100644
--- a/src/builder/java/speiger/src/builder/GlobalVariables.java
+++ b/src/builder/java/speiger/src/builder/GlobalVariables.java
@@ -211,6 +211,7 @@ public class GlobalVariables
 		addSimpleMapper("APPLY_VALUE", valueType.isObject() ? "apply" : "applyAs"+valueType.getNonFileType());
 		addSimpleMapper("APPLY_CAST", "applyAs"+type.getCustomJDKType().getNonFileType());
 		addSimpleMapper("APPLY", type.isObject() ? "apply" : "applyAs"+type.getNonFileType());
+		addFunctionValueMapper("BULK_MERGE", "mergeAll");
 		addFunctionValueMappers("COMPUTE_IF_ABSENT", "compute%sIfAbsent");
 		addFunctionValueMappers("COMPUTE_IF_PRESENT", "compute%sIfPresent");
 		addFunctionValueMapper("COMPUTE", "compute");
diff --git a/src/builder/resources/speiger/assets/collections/templates/maps/abstracts/AbstractMap.template b/src/builder/resources/speiger/assets/collections/templates/maps/abstracts/AbstractMap.template
index ada8f030..c4ed8d61 100644
--- a/src/builder/resources/speiger/assets/collections/templates/maps/abstracts/AbstractMap.template
+++ b/src/builder/resources/speiger/assets/collections/templates/maps/abstracts/AbstractMap.template
@@ -24,6 +24,7 @@ import speiger.src.collections.objects.collections.ObjectIterator;
 #if !TYPE_OBJECT
 import speiger.src.collections.objects.sets.ObjectSet;
 #endif
+import speiger.src.collections.utils.SanityChecks;
 
 /**
  * A Base Implementation of a Type Specific Map to reduce boxing/unboxing
@@ -45,6 +46,14 @@ public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CL
 		return this;
 	}
 	
+#if VALUE_PRIMITIVES
+	@Override
+	public void addToAll(MAP KEY_VALUE_GENERIC_TYPE m) {
+		for(MAP.Entry KEY_VALUE_GENERIC_TYPE entry : MAPS.fastIterable(m))
+			addTo(entry.ENTRY_KEY(), entry.ENTRY_VALUE());
+	}
+	
+#endif
 	@Override
 	public void putAll(MAP KEY_VALUE_GENERIC_TYPE m) {
 		for(ObjectIterator<MAP.Entry KEY_VALUE_GENERIC_TYPE> iter = MAPS.fastIterator(m);iter.hasNext();) {
@@ -60,6 +69,19 @@ public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CL
 		else super.putAll(m);
 	}
 	
+	@Override
+	public void putAll(KEY_TYPE[] keys, VALUE_TYPE[] values, int offset, int size) {
+		SanityChecks.checkArrayCapacity(keys.length, offset, size);
+		SanityChecks.checkArrayCapacity(values.length, offset, size);
+		for(int i = 0;i<size;i++) put(keys[i], values[i]);
+	}
+	
+	@Override
+	public void putAllIfAbsent(MAP KEY_VALUE_GENERIC_TYPE m) {
+		for(MAP.Entry KEY_VALUE_GENERIC_TYPE entry : MAPS.fastIterable(m))
+			putIfAbsent(entry.ENTRY_KEY(), entry.ENTRY_VALUE());
+	}
+	
 #if TYPE_OBJECT
 	
 	@Override
@@ -114,6 +136,12 @@ public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CL
         return curValue;
 	}
 	
+	@Override
+	public void REPLACE_VALUES(MAP KEY_VALUE_GENERIC_TYPE m) {
+		for(MAP.Entry KEY_VALUE_GENERIC_TYPE entry : MAPS.fastIterable(m))
+			replace(entry.ENTRY_KEY(), entry.ENTRY_VALUE());
+	}
+	
 	@Override
 	public void REPLACE_VALUES(UNARY_OPERATOR KEY_VALUE_GENERIC_TYPE mappingFunction) {
 		Objects.requireNonNull(mappingFunction);
@@ -178,6 +206,18 @@ public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CL
 		return newValue;
 	}
 	
+	@Override
+	public void BULK_MERGE(MAP KEY_VALUE_GENERIC_TYPE m, VALUE_UNARY_OPERATOR VALUE_VALUE_GENERIC_TYPE mappingFunction) {
+	    Objects.requireNonNull(mappingFunction);
+		for(MAP.Entry KEY_VALUE_GENERIC_TYPE entry : MAPS.fastIterable(m)) {
+			KEY_TYPE key = entry.ENTRY_KEY();
+	        VALUE_TYPE oldValue = GET_VALUE(key);
+	        VALUE_TYPE newValue = VALUE_EQUALS(oldValue, getDefaultReturnValue()) ? entry.ENTRY_VALUE() : mappingFunction.APPLY_VALUE(oldValue, entry.ENTRY_VALUE());
+	        if(VALUE_EQUALS(newValue, getDefaultReturnValue())) remove(key);
+	        else put(key, newValue);
+		}
+	}
+	
 #if TYPE_OBJECT
 	@Override
 	public CLASS_VALUE_TYPE get(Object key) {
diff --git a/src/builder/resources/speiger/assets/collections/templates/maps/interfaces/Map.template b/src/builder/resources/speiger/assets/collections/templates/maps/interfaces/Map.template
index 2db85b81..32ad73ff 100644
--- a/src/builder/resources/speiger/assets/collections/templates/maps/interfaces/Map.template
+++ b/src/builder/resources/speiger/assets/collections/templates/maps/interfaces/Map.template
@@ -50,6 +50,30 @@ public interface MAP KEY_VALUE_GENERIC_TYPE extends Map<CLASS_TYPE, CLASS_VALUE_
 	 * @see Map#put(Object, Object)
 	 */
 	public VALUE_TYPE put(KEY_TYPE key, VALUE_TYPE value);
+	
+	/**
+	 * Type Specific array method to bulk add elements into a map without creating a wrapper and increasing performances
+	 * @param keys the keys that should be added
+	 * @param values the values that should be added
+	 * @see Map#putAll(Map)
+	 * @throws IllegalStateException if the arrays are not the same size
+	 */
+	public default void putAll(KEY_TYPE[] keys, VALUE_TYPE[] values) {
+		if(keys.length != values.length) throw new IllegalStateException("Array sizes do not match");
+		putAll(keys, values, 0, keys.length);
+	}
+	
+	/**
+	 * Type Specific array method to bulk add elements into a map without creating a wrapper and increasing performances
+	 * @param keys the keys that should be added
+	 * @param values the values that should be added
+	 * @param offset where the to start in the array
+	 * @param size how many elements should be added
+	 * @see Map#putAll(Map)
+	 * @throws IllegalStateException if the arrays are not within the range
+	 */
+	public void putAll(KEY_TYPE[] keys, VALUE_TYPE[] values, int offset, int size);
+	
 	/**
 	 * Type Specific method to reduce boxing/unboxing of values
 	 * @param key the key that should be inserted,
@@ -59,6 +83,12 @@ public interface MAP KEY_VALUE_GENERIC_TYPE extends Map<CLASS_TYPE, CLASS_VALUE_
 	 */
 	public VALUE_TYPE putIfAbsent(KEY_TYPE key, VALUE_TYPE value);
 	
+	/**
+	 * Type-Specific bulk put method put elements into the map if not present.
+	 * @param m elements that should be added if not present.
+	 */
+	public void putAllIfAbsent(MAP KEY_VALUE_GENERIC_TYPE m);
+	
 #if VALUE_PRIMITIVES
 	/**
 	 * A Helper method to add a primitives together. If key is not present then this functions as a put.
@@ -68,6 +98,12 @@ public interface MAP KEY_VALUE_GENERIC_TYPE extends Map<CLASS_TYPE, CLASS_VALUE_
 	 */
 	public VALUE_TYPE addTo(KEY_TYPE key, VALUE_TYPE value);
 	
+	/**
+	 * A Helper method to bulk add primitives together.
+	 * @param m the values that should be added/inserted
+	 */
+	public void addToAll(MAP KEY_VALUE_GENERIC_TYPE m);
+	
 #endif
 	/**
 	 * Type Specific function for the bull putting of values
@@ -182,6 +218,12 @@ public interface MAP KEY_VALUE_GENERIC_TYPE extends Map<CLASS_TYPE, CLASS_VALUE_
 	 * @note this fails if the value is not present
 	 */
 	public VALUE_TYPE replace(KEY_TYPE key, VALUE_TYPE value);
+	
+	/**
+	 * Type-Specific bulk replace method. Could be seen as putAllIfPresent
+	 * @param m elements that should be replaced.
+	 */
+	public void REPLACE_VALUES(MAP KEY_VALUE_GENERIC_TYPE m);
 	/**
 	 * A Type Specific mass replace method to reduce boxing/unboxing
 	 * @param mappingFunction operation to replace all values
@@ -218,6 +260,13 @@ public interface MAP KEY_VALUE_GENERIC_TYPE extends Map<CLASS_TYPE, CLASS_VALUE_
 	 * @note if the result matches the default return value then the key is removed from the map
 	 */
 	public VALUE_TYPE MERGE(KEY_TYPE key, VALUE_TYPE value, VALUE_UNARY_OPERATOR VALUE_VALUE_GENERIC_TYPE mappingFunction);
+	/**
+	 * A Bulk method for merging Maps.
+	 * @param m the entries that should be bulk added
+	 * @param mappingFunction the operator that should generate the new Value
+	 * @note if the result matches the default return value then the key is removed from the map
+	 */
+	public void BULK_MERGE(MAP KEY_VALUE_GENERIC_TYPE m, VALUE_UNARY_OPERATOR VALUE_VALUE_GENERIC_TYPE mappingFunction);
 	
 #if !TYPE_OBJECT || !VALUE_OBJECT
 	@Override