diff --git a/src/main/java/eu/crushedpixel/replaymod/ReplayMod.java b/src/main/java/eu/crushedpixel/replaymod/ReplayMod.java
index ac3e31b2..4462318f 100644
--- a/src/main/java/eu/crushedpixel/replaymod/ReplayMod.java
+++ b/src/main/java/eu/crushedpixel/replaymod/ReplayMod.java
@@ -11,10 +11,11 @@ import net.minecraftforge.fml.common.Mod.Instance;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
-import eu.crushedpixel.replaymod.authentication.AuthenticationHandler;
+import eu.crushedpixel.replaymod.api.client.ApiClient;
 import eu.crushedpixel.replaymod.events.GuiEventHandler;
 import eu.crushedpixel.replaymod.events.GuiReplayOverlay;
 import eu.crushedpixel.replaymod.events.RecordingHandler;
+import eu.crushedpixel.replaymod.online.authentication.AuthenticationHandler;
 import eu.crushedpixel.replaymod.recording.ConnectionEventHandler;
 import eu.crushedpixel.replaymod.registry.KeybindRegistry;
 import eu.crushedpixel.replaymod.renderer.SafeEntityRenderer;
@@ -49,6 +50,8 @@ public class ReplayMod
 
 	public static int TP_DISTANCE_LIMIT = 128;
 	
+	public static final ApiClient apiClient = new ApiClient();
+	
 	// The instance of your mod that Forge uses.
 	@Instance(value = "ReplayModID")
 	public static ReplayMod instance;
@@ -87,8 +90,6 @@ public class ReplayMod
 		FMLCommonHandler.instance().bus().register(overlay);
 		MinecraftForge.EVENT_BUS.register(overlay);
 		
-		AuthenticationHandler.authenticate();
-		
 		KeybindRegistry.initialize();
 		
 		try {
diff --git a/src/main/java/eu/crushedpixel/replaymod/events/GuiEventHandler.java b/src/main/java/eu/crushedpixel/replaymod/events/GuiEventHandler.java
index df921d73..c006a091 100644
--- a/src/main/java/eu/crushedpixel/replaymod/events/GuiEventHandler.java
+++ b/src/main/java/eu/crushedpixel/replaymod/events/GuiEventHandler.java
@@ -20,11 +20,14 @@ import net.minecraftforge.client.event.GuiOpenEvent;
 import net.minecraftforge.client.event.GuiScreenEvent.ActionPerformedEvent;
 import net.minecraftforge.client.event.GuiScreenEvent.InitGuiEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import eu.crushedpixel.replaymod.authentication.AuthenticationHandler;
+import eu.crushedpixel.replaymod.gui.GuiConstants;
 import eu.crushedpixel.replaymod.gui.GuiReplaySaving;
 import eu.crushedpixel.replaymod.gui.GuiReplaySettings;
+import eu.crushedpixel.replaymod.gui.online.GuiLoginPrompt;
+import eu.crushedpixel.replaymod.gui.online.GuiReplayCenter;
 import eu.crushedpixel.replaymod.gui.replaymanager.GuiReplayManager;
 import eu.crushedpixel.replaymod.gui.replaymanager.ResourceHelper;
+import eu.crushedpixel.replaymod.online.authentication.AuthenticationHandler;
 import eu.crushedpixel.replaymod.registry.ReplayGuiRegistry;
 import eu.crushedpixel.replaymod.renderer.SafeEntityRenderer;
 import eu.crushedpixel.replaymod.replay.ReplayHandler;
@@ -64,9 +67,6 @@ public class GuiEventHandler {
 		}
 	}
 
-	private static final int REPLAY_MANAGER_ID = 9001;
-	private static final int REPLAY_OPTIONS_ID = 9001;
-
 	@SubscribeEvent
 	public void onInit(InitGuiEvent event) {
 		if(event.gui instanceof GuiIngameMenu && ReplayHandler.replayActive()) {
@@ -89,9 +89,15 @@ public class GuiEventHandler {
 				}
 			}
 
-			GuiButton rm = new GuiButton(REPLAY_MANAGER_ID, event.gui.width / 2 - 100, i1 + 2*24, I18n.format("Replay Manager", new Object[0]));
+			GuiButton rm = new GuiButton(GuiConstants.REPLAY_MANAGER_BUTTON_ID, event.gui.width / 2 - 100, i1 + 2*24, I18n.format("Replay Manager", new Object[0]));
+			rm.width = rm.width/2 - 2;
 			rm.enabled = AuthenticationHandler.isAuthenticated();
 			event.buttonList.add(rm);
+			
+			GuiButton rc = new GuiButton(GuiConstants.REPLAY_CENTER_BUTTON_ID, event.gui.width / 2 + 2, i1 + 2*24, I18n.format("Replay Center", new Object[0]));
+			rc.width = rc.width/2 - 2;
+			rc.enabled = true;
+			event.buttonList.add(rc);
 		} else if(event.gui instanceof GuiOptions) {
 			event.buttonList.add(new GuiButton(9001, event.gui.width / 2 - 155, event.gui.height / 6 + 48 - 6 - 24, 310, 20, "Replay Mod Settings..."));
 		}
@@ -99,10 +105,14 @@ public class GuiEventHandler {
 
 	@SubscribeEvent
 	public void onButton(ActionPerformedEvent event) {
-		if(!AuthenticationHandler.isAuthenticated()) return;
-		if(event.gui instanceof GuiMainMenu && event.button.id == REPLAY_MANAGER_ID) {
-			mc.displayGuiScreen(new GuiReplayManager());
-		} else if(event.gui instanceof GuiOptions && event.button.id == REPLAY_OPTIONS_ID) {
+		if(!event.button.enabled) return;
+		if(event.gui instanceof GuiMainMenu) {
+			if(event.button.id == GuiConstants.REPLAY_MANAGER_BUTTON_ID) {
+				mc.displayGuiScreen(new GuiReplayManager());
+			} else if(event.button.id == GuiConstants.REPLAY_CENTER_BUTTON_ID) {
+				mc.displayGuiScreen(new GuiLoginPrompt(event.gui, new GuiReplayCenter()));
+			}
+		} else if(event.gui instanceof GuiOptions && event.button.id == GuiConstants.REPLAY_OPTIONS_BUTTON_ID) {
 			mc.displayGuiScreen(new GuiReplaySettings(event.gui));
 		}
 		
@@ -111,8 +121,6 @@ public class GuiEventHandler {
 			Thread t = new Thread(new Runnable() {
 				@Override
 				public void run() {			
-					//mc.displayGuiScreen(new GuiReplaySaving(new GuiMainMenu()));
-
 					ReplayHandler.setSpeed(1f);
 					ReplayHandler.endReplay();
 
diff --git a/src/main/java/eu/crushedpixel/replaymod/gui/GuiConstants.java b/src/main/java/eu/crushedpixel/replaymod/gui/GuiConstants.java
new file mode 100644
index 00000000..97e64761
--- /dev/null
+++ b/src/main/java/eu/crushedpixel/replaymod/gui/GuiConstants.java
@@ -0,0 +1,15 @@
+package eu.crushedpixel.replaymod.gui;
+
+public class GuiConstants {
+
+	public static final int REPLAY_OPTIONS_BUTTON_ID = 8000;
+	
+	public static final int REPLAY_MANAGER_BUTTON_ID = 9001;
+	
+	public static final int REPLAY_CENTER_BUTTON_ID = 1000;
+	public static final int REPLAY_CENTER_LOGIN_TEXT_ID = 1001;
+	public static final int REPLAY_CENTER_PASSWORD_TEXT_ID = 1002;
+	
+	public static final int LOGIN_OKAY_BUTTON = 1100;
+	public static final int LOGIN_CANCEL_BUTTON = 1101;
+}
diff --git a/src/main/java/eu/crushedpixel/replaymod/gui/PasswordTextField.java b/src/main/java/eu/crushedpixel/replaymod/gui/PasswordTextField.java
new file mode 100644
index 00000000..7c0b83a2
--- /dev/null
+++ b/src/main/java/eu/crushedpixel/replaymod/gui/PasswordTextField.java
@@ -0,0 +1,46 @@
+package eu.crushedpixel.replaymod.gui;
+
+import java.lang.reflect.Field;
+
+import eu.crushedpixel.replaymod.reflection.MCPNames;
+import net.minecraft.client.gui.FontRenderer;
+import net.minecraft.client.gui.GuiTextField;
+
+public class PasswordTextField extends GuiTextField {
+
+	private static Field text;
+
+	static {
+		try {
+			text = GuiTextField.class.getDeclaredField(MCPNames.field("field_146216_j"));
+			text.setAccessible(true);
+		} catch(Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	public PasswordTextField(int p_i45542_1_, FontRenderer p_i45542_2_,
+			int p_i45542_3_, int p_i45542_4_, int p_i45542_5_, int p_i45542_6_) {
+		super(p_i45542_1_, p_i45542_2_, p_i45542_3_, p_i45542_4_, p_i45542_5_,
+				p_i45542_6_);
+	}
+
+	@Override
+	public void drawTextBox() {
+		String prev = getText();
+
+		String pw = "";
+		for(int i=0; i<prev.length(); i++) {
+			pw += "*";
+		}
+
+		try {
+			text.set(this, pw);
+			super.drawTextBox();
+			text.set(this, prev);
+		} catch(Exception e) {}
+	}
+
+
+
+}
diff --git a/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiLoginPrompt.java b/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiLoginPrompt.java
new file mode 100644
index 00000000..04edc47e
--- /dev/null
+++ b/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiLoginPrompt.java
@@ -0,0 +1,164 @@
+package eu.crushedpixel.replaymod.gui.online;
+
+import java.awt.Color;
+import java.io.IOException;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.client.gui.GuiTextField;
+
+import org.lwjgl.input.Keyboard;
+
+import eu.crushedpixel.replaymod.gui.GuiConstants;
+import eu.crushedpixel.replaymod.gui.PasswordTextField;
+import eu.crushedpixel.replaymod.online.authentication.AuthenticationHandler;
+
+public class GuiLoginPrompt extends GuiScreen {
+
+	private static final int EMPTY = 0;
+	private static final int LOGGING_IN = 1;
+	private static final int INVALID_LOGIN = 2;
+	private static final int NO_CONNECTION = 3;
+	
+	private GuiScreen parent, successScreen;
+	
+	private int textState = 0;
+
+	private static Minecraft mc = Minecraft.getMinecraft();
+
+	private GuiTextField username;
+	private PasswordTextField password;
+	private GuiButton loginButton;
+	private GuiButton cancelButton;
+
+	public GuiLoginPrompt(GuiScreen parent, GuiScreen successScreen) {
+		this.parent = parent;
+		this.successScreen = successScreen;
+	}
+
+	@Override
+	public void initGui() {
+		Keyboard.enableRepeatEvents(true);
+
+		username = new GuiTextField(GuiConstants.REPLAY_CENTER_LOGIN_TEXT_ID, fontRendererObj, this.width/2 - 45, 30, 145, 20);
+		username.setEnabled(true);
+		username.setFocused(true);
+
+		password = new PasswordTextField(GuiConstants.REPLAY_CENTER_PASSWORD_TEXT_ID, fontRendererObj, this.width/2 - 45, 60, 145, 20);
+		password.setEnabled(true);
+		password.setFocused(false);
+
+		loginButton = new GuiButton(GuiConstants.LOGIN_OKAY_BUTTON, this.width/2 - 150 - 2, 110, "Login");
+		loginButton.width = 150;
+		loginButton.enabled = false;
+		buttonList.add(loginButton);
+
+		cancelButton = new GuiButton(GuiConstants.LOGIN_CANCEL_BUTTON, this.width/2 + 2, 110, "Cancel");
+		cancelButton.width = 150;
+		buttonList.add(cancelButton);
+	}
+
+	@Override
+	protected void actionPerformed(GuiButton button) throws IOException {
+		if(button.id == GuiConstants.LOGIN_OKAY_BUTTON) {
+			if(button.enabled) {
+				//Authenticate
+				textState = LOGGING_IN; 
+				
+				Thread loginThread = new Thread(new Runnable() {
+					@Override
+					public void run() {
+						switch(AuthenticationHandler.authenticate(username.getText(), password.getText())) {
+						case AuthenticationHandler.SUCCESS:
+							textState = EMPTY;
+							mc.displayGuiScreen(successScreen);
+							break;
+						case AuthenticationHandler.INVALID:
+							textState = INVALID_LOGIN;
+							break;
+						case AuthenticationHandler.NO_CONNECTION:
+							textState = NO_CONNECTION;
+							break;
+						}
+					}
+				});
+				
+				loginThread.start();
+			}
+		} else if(button.id == GuiConstants.LOGIN_CANCEL_BUTTON) {
+			mc.displayGuiScreen(parent);
+		}
+	}
+
+	private int lastMouseX, lastMouseY;
+	private float lastPartialTicks;
+	
+	@Override
+	public void drawScreen(int mouseX, int mouseY, float partialTicks) {
+		lastMouseX = mouseX;
+		lastMouseY = mouseY;
+		lastPartialTicks = partialTicks;
+		
+		this.drawDefaultBackground();
+		drawCenteredString(fontRendererObj, "Login to ReplayMod.com", this.width/2, 10, Color.WHITE.getRGB());
+
+		drawString(fontRendererObj, "Username", this.width/2 - 100, 37, Color.WHITE.getRGB());
+		username.drawTextBox();
+
+		drawString(fontRendererObj, "Password", this.width/2 - 100, 67, Color.WHITE.getRGB());
+		password.drawTextBox();
+		
+		switch(textState) {
+		case INVALID_LOGIN:
+			drawCenteredString(fontRendererObj, "Incorrect username or password.", this.width/2, 92, Color.RED.getRGB());
+			break;
+		case LOGGING_IN:
+			drawCenteredString(fontRendererObj, "Logging in...", this.width/2, 92, Color.WHITE.getRGB());
+			break;
+		}
+		super.drawScreen(mouseX, mouseY, partialTicks);
+	}
+
+	@Override
+	public void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException {
+		super.mouseClicked(mouseX, mouseY, mouseButton);
+		username.mouseClicked(mouseX, mouseY, mouseButton);
+		password.mouseClicked(mouseX, mouseY, mouseButton);
+	}
+
+	@Override
+	public void updateScreen() {
+		username.updateCursorCounter();
+		password.updateCursorCounter();
+	}
+
+	@Override
+	public void onGuiClosed() {
+		Keyboard.enableRepeatEvents(false);
+	}
+
+	@Override
+	protected void keyTyped(char typedChar, int keyCode) throws IOException {
+		if(keyCode == Keyboard.KEY_TAB) {
+			if(password.isFocused()) {
+				password.setFocused(false);
+				username.setFocused(true);
+			} else {
+				username.setFocused(false);
+				password.setFocused(true);
+			}
+			return;
+		}
+		if(keyCode == 28) { //Enter key
+			actionPerformed(loginButton);
+			return;
+		}
+		if(username.isFocused()) {
+			username.textboxKeyTyped(typedChar, keyCode);
+		} else if(password.isFocused()) {
+			password.textboxKeyTyped(typedChar, keyCode);
+		}
+		loginButton.enabled = username.getText().length() > 0 && password.getText().length() > 0;
+	}
+}
diff --git a/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiReplayCenter.java b/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiReplayCenter.java
new file mode 100644
index 00000000..a835393c
--- /dev/null
+++ b/src/main/java/eu/crushedpixel/replaymod/gui/online/GuiReplayCenter.java
@@ -0,0 +1,7 @@
+package eu.crushedpixel.replaymod.gui.online;
+
+import net.minecraft.client.gui.GuiScreen;
+
+public class GuiReplayCenter extends GuiScreen {
+
+}
diff --git a/src/main/java/eu/crushedpixel/replaymod/gui/replaymanager/GuiReplayManager.java b/src/main/java/eu/crushedpixel/replaymod/gui/replaymanager/GuiReplayManager.java
index a9a20629..172fc55e 100644
--- a/src/main/java/eu/crushedpixel/replaymod/gui/replaymanager/GuiReplayManager.java
+++ b/src/main/java/eu/crushedpixel/replaymod/gui/replaymanager/GuiReplayManager.java
@@ -89,15 +89,7 @@ public class GuiReplayManager extends GuiScreen implements GuiYesNoCallback {
 						BufferedImage bimg = ImageIO.read(is);
 						if(bimg != null) {
 							img = ImageUtils.scaleImage(bimg, new Dimension(1280, 720));
-						} 
-						
-						/* Old way of reading thumbnail
-						else {
-							is = archive.getInputStream(image);
-							bimg = ImageIO.read(is);
-							img = ImageUtils.scaleImage(bimg, new Dimension(1280, 720));
 						}
-						*/
 					}
 
 					InputStream is = archive.getInputStream(metadata);
@@ -136,8 +128,8 @@ public class GuiReplayManager extends GuiScreen implements GuiYesNoCallback {
 
 	}
 
-	public void initGui()
-	{
+	@Override
+	public void initGui() {
 		replayGuiList = new GuiReplayListExtended(this, this.mc, this.width, this.height, 32, this.height - 64, 36);
 		Keyboard.enableRepeatEvents(true);
 		this.buttonList.clear();
diff --git a/src/main/java/eu/crushedpixel/replaymod/authentication/AuthenticationHandler.java b/src/main/java/eu/crushedpixel/replaymod/online/authentication/AuthenticationHandler.java
similarity index 56%
rename from src/main/java/eu/crushedpixel/replaymod/authentication/AuthenticationHandler.java
rename to src/main/java/eu/crushedpixel/replaymod/online/authentication/AuthenticationHandler.java
index 7ab7b216..3bd9cb7b 100644
--- a/src/main/java/eu/crushedpixel/replaymod/authentication/AuthenticationHandler.java
+++ b/src/main/java/eu/crushedpixel/replaymod/online/authentication/AuthenticationHandler.java
@@ -1,23 +1,37 @@
-package eu.crushedpixel.replaymod.authentication;
+package eu.crushedpixel.replaymod.online.authentication;
 
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
 import net.minecraft.client.Minecraft;
+import eu.crushedpixel.replaymod.ReplayMod;
+import eu.crushedpixel.replaymod.api.client.ApiException;
 import eu.crushedpixel.replaymod.reflection.MCPNames;
 
 public class AuthenticationHandler {
 
+	public static final int SUCCESS = 1;
+	public static final int INVALID = 2;
+	public static final int NO_CONNECTION = 3;
+	
 	private static Minecraft mc = Minecraft.getMinecraft();
 
-	private static boolean auth = false;
+	private static String authkey = null;
 
 	public static boolean isAuthenticated() {
-		return auth;
+		return authkey != null;
 	}
 
-	public static void authenticate() {
-		auth = isPremiumUsername(Minecraft.getMinecraft().getSession().getUsername());
+	public static int authenticate(String username, String password) {
+		try {
+			authkey = ReplayMod.apiClient.getLogin(username, password).getAuthkey();
+			return SUCCESS;
+		} catch(ApiException e) {
+			return INVALID;
+		} catch(Exception e) {
+			return NO_CONNECTION;
+		}
 	}
 
 	private static final List<String> PREMIUM_USERS = new ArrayList<String>() {
diff --git a/src/main/java/eu/crushedpixel/replaymod/recording/DataListener.java b/src/main/java/eu/crushedpixel/replaymod/recording/DataListener.java
index 58c8c921..19015835 100644
--- a/src/main/java/eu/crushedpixel/replaymod/recording/DataListener.java
+++ b/src/main/java/eu/crushedpixel/replaymod/recording/DataListener.java
@@ -20,6 +20,7 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.ActiveRenderInfo;
 
 import com.google.gson.Gson;
 
@@ -146,8 +147,13 @@ public abstract class DataListener extends ChannelInboundHandlerAdapter {
 
 			try {
 				GuiReplaySaving.replaySaving = true;
-				
+
 				String mcversion = Minecraft.getMinecraft().getVersion();
+				String[] split = mcversion.split("-");
+				if(split.length > 0) {
+					mcversion = split[0];
+				}
+				
 				String[] pl = players.toArray(new String[players.size()]);
 				
 				ReplayMetaData metaData = new ReplayMetaData(singleplayer, worldName, (int) lastSentPacket, startTime, pl, mcversion);