diff --git a/Runtime/NetworkObject.cs b/Runtime/NetworkObject.cs
index 94bf3a7..5c605ac 100644
--- a/Runtime/NetworkObject.cs
+++ b/Runtime/NetworkObject.cs
@@ -18,8 +18,8 @@ namespace VelNet
 		[Tooltip("Whether this object's ownership is transferrable. Should be true for player objects.")]
 		public bool ownershipLocked;
 
-		public bool IsMine => owner != null && owner.isLocal;
-
+		public bool IsMine => owner?.isLocal ?? false;
+		
 		/// <summary>
 		/// This is forged from the combination of the creator's id (-1 in the case of a scene object) and an object id, so it's always unique for a room
 		/// </summary>
@@ -56,7 +56,14 @@ namespace VelNet
 			}
 
 			int index = syncedComponents.IndexOf(component);
-			owner.SendMessage(this, index.ToString(), message, reliable);
+			if (index < 0)
+			{
+				Debug.LogError("WAAAAAAAH. NetworkObject doesn't have a reference to this component.", component);
+			}
+			else
+			{
+				owner.SendMessage(this, index.ToString(), message, reliable);
+			}
 		}
 
 		public void SendBytesToGroup(NetworkComponent component, string group, byte[] message, bool reliable = true)
@@ -122,6 +129,7 @@ namespace VelNet
 				{
 					c.networkObject = t;
 				}
+				PrefabUtility.RecordPrefabInstancePropertyModifications(t);
 			}
 
 			// make the sceneNetworkId a new unique value
diff --git a/Runtime/Util/BinaryWriterExtensions.cs b/Runtime/Util/BinaryWriterExtensions.cs
index ed7aba5..f43524d 100644
--- a/Runtime/Util/BinaryWriterExtensions.cs
+++ b/Runtime/Util/BinaryWriterExtensions.cs
@@ -61,5 +61,33 @@ namespace VelNet
 
 			return bytes.ToArray();
 		}
+		
+		public static List<bool> GetBitmaskValues(this IEnumerable<byte> bytes)
+		{
+			List<bool> l = new List<bool>();
+			foreach (byte b in bytes)
+			{
+				l.AddRange(b.GetBitmaskValues());
+			}
+
+			return l;
+		}
+		
+		public static List<bool> GetBitmaskValues(this byte b)
+		{
+			List<bool> l = new List<bool>();
+			for (int i = 0; i < 8; i++)
+			{
+				l.Add(b.GetBitmaskValue(i));
+			}
+
+			return l;
+		}
+		
+		public static bool GetBitmaskValue(this byte b, int index)
+		{
+			return (b & (1 << index)) != 0;
+		}
+		
 	}
 }
\ No newline at end of file
diff --git a/Runtime/Util/NetworkSerializedObjectStream.cs b/Runtime/Util/NetworkSerializedObjectStream.cs
index a6929f8..161791f 100644
--- a/Runtime/Util/NetworkSerializedObjectStream.cs
+++ b/Runtime/Util/NetworkSerializedObjectStream.cs
@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.IO;
 using UnityEngine;
 using UnityEngine.Serialization;
@@ -19,12 +20,19 @@ namespace VelNet
 		{
 			while (true)
 			{
-				if (IsMine)
+				try
 				{
-					using MemoryStream mem = new MemoryStream();
-					using BinaryWriter writer = new BinaryWriter(mem);
-					SendState(writer);
-					SendBytes(mem.ToArray());
+					if (IsMine)
+					{
+						using MemoryStream mem = new MemoryStream();
+						using BinaryWriter writer = new BinaryWriter(mem);
+						SendState(writer);
+						SendBytes(mem.ToArray());
+					}
+				}
+				catch (Exception e)
+				{
+					Debug.LogError(e);
 				}
 
 				yield return new WaitForSeconds(1f / serializationRateHz);
diff --git a/Runtime/Util/SyncRigidbody.cs b/Runtime/Util/SyncRigidbody.cs
index 3f65511..5937ff4 100644
--- a/Runtime/Util/SyncRigidbody.cs
+++ b/Runtime/Util/SyncRigidbody.cs
@@ -16,10 +16,10 @@ namespace VelNet
 		[Tooltip("0 to disable.")]
 		public float teleportAngle;
 
-		public bool syncKinematic;
-		public bool syncGravity;
-		public bool syncVelocity;
-		public bool syncAngularVelocity;
+		public bool syncKinematic = true;
+		public bool syncGravity = true;
+		public bool syncVelocity = true;
+		public bool syncAngularVelocity = true;
 
 		private Vector3 targetPosition;
 		private Quaternion targetRotation;
diff --git a/Runtime/VelNetManager.cs b/Runtime/VelNetManager.cs
index 295df6e..8a2e447 100644
--- a/Runtime/VelNetManager.cs
+++ b/Runtime/VelNetManager.cs
@@ -34,7 +34,6 @@ namespace VelNet
 		private Thread clientReceiveThread;
 		private Thread clientReceiveThreadUDP;
 		public int userid = -1;
-		public string room;
 		private int messagesReceived = 0;
 
 		public readonly Dictionary<int, VelNetPlayer> players = new Dictionary<int, VelNetPlayer>();
@@ -63,7 +62,7 @@ namespace VelNet
 
 		public static Action OnConnectedToServer;
 		public static Action<Message> MessageReceived;
-		public static Action LoggedIn;
+		public static Action OnLoggedIn;
 		public static Action<string[], int> RoomsReceived;
 
 		public bool connected;
@@ -83,8 +82,23 @@ namespace VelNet
 		public readonly Dictionary<string, List<int>> groups = new Dictionary<string, List<int>>();
 
 		private VelNetPlayer masterPlayer;
-		public static VelNetPlayer LocalPlayer => instance.players.Where(p => p.Value.isLocal).Select(p => p.Value).FirstOrDefault();
+		public static VelNetPlayer LocalPlayer => instance != null ? instance.players.Where(p => p.Value.isLocal).Select(p => p.Value).FirstOrDefault() : null;
 		public static bool InRoom => LocalPlayer != null && LocalPlayer.room != "-1" && LocalPlayer.room != "";
+		public static string Room => LocalPlayer?.room;
+		
+		/// <summary>
+		/// The player count in this room.
+		/// -1 if not in a room.
+		/// </summary>
+		public static int PlayerCount => instance.players.Count;
+
+		/// <summary>
+		/// The player count in all rooms.
+		/// Will include players connected to the server but not in a room?
+		/// </summary>
+		public static int PlayerCountInAllRooms => PlayerCount; // TODO hook up to actual player count
+
+		public static bool IsConnected => instance != null && instance.connected && instance.udpConnected;
 
 
 		// Use this for initialization
@@ -151,11 +165,11 @@ namespace VelNet
 						// when you join the server
 						case 0:
 							userid = m.sender;
-							Debug.Log("joined server");
+							Debug.Log("Joined server");
 
 							try
 							{
-								LoggedIn?.Invoke();
+								OnLoggedIn?.Invoke();
 							}
 							// prevent errors in subscribers from breaking our code
 							catch (Exception e)
@@ -243,24 +257,24 @@ namespace VelNet
 								// we got a left message, kill it
 								// change ownership of all objects to master
 								List<string> deleteObjects = new List<string>();
-								foreach (KeyValuePair<string, NetworkObject> kvp in objects)
+								foreach ((string key, NetworkObject value) in objects)
 								{
-									if (kvp.Value.owner == players[m.sender]) // the owner is the player that left
+									if (value.owner == players[m.sender]) // the owner is the player that left
 									{
 										// if this object has locked ownership, delete it
-										if (kvp.Value.ownershipLocked)
+										if (value.ownershipLocked)
 										{
-											deleteObjects.Add(kvp.Value.networkId);
+											deleteObjects.Add(value.networkId);
 										}
 										// I'm the local master player, so can take ownership immediately
 										else if (me.isLocal && me == masterPlayer)
 										{
-											TakeOwnership(kvp.Key);
+											TakeOwnership(key);
 										}
 										// the master player left, so everyone should set the owner null (we should get a new master shortly)
 										else if (players[m.sender] == masterPlayer)
 										{
-											kvp.Value.owner = null;
+											value.owner = null;
 										}
 									}
 								}
@@ -268,7 +282,16 @@ namespace VelNet
 								// TODO this may check for ownership in the future. We don't need ownership here
 								deleteObjects.ForEach(NetworkDestroy);
 
+								VelNetPlayer removedPlayer = players[m.sender];
 								players.Remove(m.sender);
+								try
+								{
+									OnPlayerLeft?.Invoke(removedPlayer);
+								}
+								catch (Exception e)
+								{
+									Debug.LogError(e);
+								}
 							}
 							else
 							{
@@ -352,7 +375,7 @@ namespace VelNet
 
 		private void OnApplicationQuit()
 		{
-			socketConnection.Close();
+			socketConnection?.Close();
 		}
 
 		/// <summary> 	
diff --git a/Runtime/VelNetPlayer.cs b/Runtime/VelNetPlayer.cs
index fae5623..1152432 100644
--- a/Runtime/VelNetPlayer.cs
+++ b/Runtime/VelNetPlayer.cs
@@ -9,8 +9,6 @@ namespace VelNet
 	public class VelNetPlayer
 	{
 		public int userid;
-		public string username;
-
 		public string room;
 
 		public bool isLocal;
@@ -69,7 +67,7 @@ namespace VelNet
 
 				switch (sections[0])
 				{
-					case "5": //sync update for an object I may own
+					case "5": // sync update for an object I may own
 					{
 						string objectKey = sections[1];
 						string identifier = sections[2];
@@ -85,7 +83,7 @@ namespace VelNet
 
 						break;
 					}
-					case "6": //I'm trying to take ownership of an object 
+					case "6": // I'm trying to take ownership of an object 
 					{
 						string networkId = sections[1];