diff --git a/BeefLibs/corlib/src/Collections/Generic/Dictionary.bf b/BeefLibs/corlib/src/Collections/Generic/Dictionary.bf
index adddac93..07a08589 100644
--- a/BeefLibs/corlib/src/Collections/Generic/Dictionary.bf
+++ b/BeefLibs/corlib/src/Collections/Generic/Dictionary.bf
@@ -13,7 +13,7 @@ namespace System.Collections.Generic
 	using System.Diagnostics;
 	using System.Diagnostics.Contracts;
 
-	public class Dictionary<TKey, TValue> where TKey : IHashable //: IDictionary<TKey, TValue>, IDictionary, IReadOnlyDictionary<TKey, TValue>, ISerializable, IDeserializationCallback
+	public class Dictionary<TKey, TValue> : ICollection<KeyValuePair<TKey, TValue>> where TKey : IHashable //: IDictionary<TKey, TValue>, IDictionary, IReadOnlyDictionary<TKey, TValue>, ISerializable, IDeserializationCallback
 	{
 		private struct Entry			
 		{
@@ -107,6 +107,11 @@ namespace System.Collections.Generic
 		{
 			Insert(key, value, true);
 		}
+		
+		public void Add(KeyValuePair<TKey, TValue> kvPair)
+		{
+			Insert(kvPair.Key, kvPair.Value, true);
+		}
 
 		public bool TryAdd(TKey key, TValue value)
 		{
@@ -215,6 +220,36 @@ namespace System.Collections.Generic
 			}
 			return false;
 		}
+		
+		public bool Contains(KeyValuePair<TKey, TValue> kvPair)
+		{
+			TValue value;
+			if(TryGetValue(kvPair.Key, out value))
+			{
+				return value == kvPair.Value;
+			}else{
+				return false;
+			}
+		}
+		
+		public void CopyTo(KeyValuePair<TKey, TValue>[] kvPair, int index)
+		{
+			Keys.Reset();
+			Values.Reset();
+			int i = 0;
+
+			repeat
+			{
+				if(i >= index)
+				{
+					kvPair[i] = KeyValuePair<TKey,TValue>(Keys.Current, Values.CurrentRef);
+				}
+			}
+			while(Keys.MoveNext() && Values.MoveNext());
+
+			Keys.Reset();
+			Values.Reset();
+		}
 
 		public Enumerator GetEnumerator()
 		{
@@ -459,6 +494,12 @@ namespace System.Collections.Generic
 			}
 			return false;
 		}
+		
+		[Inline]
+		public bool Remove(KeyValuePair<TKey, TValue> kvPair)
+		{
+			return Remove(kvPair.Key);
+		}
 
 		public Result<(TKey key, TValue value)> GetAndRemove(TKey key)
 		{
diff --git a/BeefLibs/corlib/src/Collections/Generic/ICollection.bf b/BeefLibs/corlib/src/Collections/Generic/ICollection.bf
new file mode 100644
index 00000000..52d683b4
--- /dev/null
+++ b/BeefLibs/corlib/src/Collections/Generic/ICollection.bf
@@ -0,0 +1,16 @@
+namespace System.Collections.Generic
+{
+	interface ICollection<T>
+	{
+		public abstract int Count
+		{
+			get;
+		}
+
+		public void Add(T item);
+		public void Clear();
+		public bool Contains(T item);
+		public void CopyTo(T[] arr, int index);
+		public bool Remove(T item);
+	}
+}
diff --git a/BeefLibs/corlib/src/Collections/Generic/List.bf b/BeefLibs/corlib/src/Collections/Generic/List.bf
index 1ce7c14e..5b012c33 100644
--- a/BeefLibs/corlib/src/Collections/Generic/List.bf
+++ b/BeefLibs/corlib/src/Collections/Generic/List.bf
@@ -23,7 +23,7 @@ namespace System.Collections.Generic
 		}
 	}
 
-	public class List<T> : IEnumerable<T>, IList
+	public class List<T> : IEnumerable<T>, IList, ICollection<T>
 	{
 		private const int_cosize cDefaultCapacity = 4;