diff --git a/runelite-client/src/main/java/net/runelite/client/RuneLite.java b/runelite-client/src/main/java/net/runelite/client/RuneLite.java
index 080348ce07..488c2520ce 100644
--- a/runelite-client/src/main/java/net/runelite/client/RuneLite.java
+++ b/runelite-client/src/main/java/net/runelite/client/RuneLite.java
@@ -40,6 +40,7 @@ import java.lang.management.RuntimeMXBean;
 import java.net.Authenticator;
 import java.net.PasswordAuthentication;
 import java.util.Locale;
+import java.util.Optional;
 import javax.annotation.Nullable;
 import javax.inject.Provider;
 import javax.inject.Singleton;
@@ -63,6 +64,7 @@ import net.runelite.client.game.ClanManager;
 import net.runelite.client.game.ItemManager;
 import net.runelite.client.game.LootManager;
 import net.runelite.client.game.PlayerManager;
+import net.runelite.client.game.WorldService;
 import net.runelite.client.game.XpDropManager;
 import net.runelite.client.game.chatbox.ChatboxPanelManager;
 import net.runelite.client.graphics.ModelOutlineRenderer;
@@ -81,7 +83,10 @@ import net.runelite.client.ui.overlay.arrow.ArrowWorldOverlay;
 import net.runelite.client.ui.overlay.infobox.InfoBoxOverlay;
 import net.runelite.client.ui.overlay.tooltip.TooltipOverlay;
 import net.runelite.client.ui.overlay.worldmap.WorldMapOverlay;
+import net.runelite.client.util.WorldUtil;
 import net.runelite.client.ws.PartyService;
+import net.runelite.http.api.worlds.World;
+import net.runelite.http.api.worlds.WorldResult;
 import org.slf4j.LoggerFactory;
 
 @Singleton
@@ -103,6 +108,8 @@ public class RuneLite
 	@Inject
 	public DiscordService discordService;
 	@Inject
+	private WorldService worldService;
+	@Inject
 	private PluginManager pluginManager;
 	@Inject
 	private ConfigManager configManager;
@@ -254,16 +261,16 @@ public class RuneLite
 			}
 		}
 
-		Integer world = null;
 		if (options.has("world"))
 		{
-			world = options.valueOf(worldInfo);
+			int world = options.valueOf(worldInfo);
+			System.setProperty("cli.world", String.valueOf(world));
 		}
 
 		SentryClient client = Sentry.init("https://fa31d674e44247fa93966c69a903770f@sentry.io/1811856");
 		client.setRelease(RuneLiteProperties.getPlusVersion());
 
-		final ClientLoader clientLoader = new ClientLoader(options.valueOf(updateMode), world);
+		final ClientLoader clientLoader = new ClientLoader(options.valueOf(updateMode));
 		Completable.fromAction(clientLoader::get)
 			.subscribeOn(Schedulers.computation())
 			.subscribe();
@@ -364,6 +371,10 @@ public class RuneLite
 		RuneLiteSplashScreen.stage(.80, "Initialize UI");
 		clientUI.init(this);
 
+		//Set the world if specified via CLI args - will not work until clientUI.init is called
+		Optional<Integer> worldArg = Optional.ofNullable(System.getProperty("cli.world")).map(Integer::parseInt);
+		worldArg.ifPresent(this::setWorld);
+
 		// Initialize Discord service
 		discordService.init();
 
@@ -412,6 +423,44 @@ public class RuneLite
 		clientUI.show();
 	}
 
+	private void setWorld(int cliWorld)
+	{
+		int correctedWorld = cliWorld < 300 ? cliWorld + 300 : cliWorld;
+
+		if (correctedWorld <= 300 || client.getWorld() == correctedWorld)
+		{
+			return;
+		}
+
+		final WorldResult worldResult = worldService.getWorlds();
+
+		if (worldResult == null)
+		{
+			log.warn("Failed to lookup worlds.");
+			return;
+		}
+
+		final World world = worldResult.findWorld(correctedWorld);
+
+		if (world != null)
+		{
+			final net.runelite.api.World rsWorld = client.createWorld();
+			rsWorld.setActivity(world.getActivity());
+			rsWorld.setAddress(world.getAddress());
+			rsWorld.setId(world.getId());
+			rsWorld.setPlayerCount(world.getPlayers());
+			rsWorld.setLocation(world.getLocation());
+			rsWorld.setTypes(WorldUtil.toWorldTypes(world.getTypes()));
+
+			client.changeWorld(rsWorld);
+			log.debug("Applied new world {}", correctedWorld);
+		}
+		else
+		{
+			log.warn("World {} not found.", correctedWorld);
+		}
+	}
+
 	public void shutdown()
 	{
 		configManager.sendConfig();
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/defaultworld/DefaultWorldPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/defaultworld/DefaultWorldPlugin.java
index 0f98862c3a..d069019388 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/defaultworld/DefaultWorldPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/defaultworld/DefaultWorldPlugin.java
@@ -157,6 +157,11 @@ public class DefaultWorldPlugin extends Plugin
 			log.debug("Stored old world {}", worldCache);
 		}
 
+		if (System.getProperty("cli.world") != null)
+		{
+			return;
+		}
+
 		final int newWorld = !config.useLastWorld() ? config.getWorld() : config.lastWorld();
 		changeWorld(newWorld);
 	}
diff --git a/runelite-client/src/main/java/net/runelite/client/rs/ClientLoader.java b/runelite-client/src/main/java/net/runelite/client/rs/ClientLoader.java
index 31911fdaba..d19329652a 100644
--- a/runelite-client/src/main/java/net/runelite/client/rs/ClientLoader.java
+++ b/runelite-client/src/main/java/net/runelite/client/rs/ClientLoader.java
@@ -49,16 +49,14 @@ public class ClientLoader implements Supplier<Applet>
 
 	private static final int NUM_ATTEMPTS = 10;
 	private final ClientUpdateCheckMode updateCheckMode;
-	private final Integer worldNumber;
 	private Object client = null;
 
 	private WorldSupplier worldSupplier = new WorldSupplier();
 	private RSConfig config;
 
-	public ClientLoader(ClientUpdateCheckMode updateCheckMode, Integer worldNumber)
+	public ClientLoader(ClientUpdateCheckMode updateCheckMode)
 	{
 		this.updateCheckMode = updateCheckMode;
-		this.worldNumber = worldNumber;
 	}
 
 	private static Applet loadRLPlus(final RSConfig config)
@@ -187,18 +185,6 @@ public class ClientLoader implements Supplier<Applet>
 					throw new IOException("Invalid or missing jav_config");
 				}
 
-				if (worldNumber != null)
-				{
-					final World world = worldSupplier.get(w -> w.getId() == worldNumber);
-					if (world == null)
-					{
-						log.warn("The provided world: {} could not be found. Reverting to random P2P world.", worldNumber);
-						return;
-					}
-					log.info("Set world to: {}", worldNumber);
-					config.getAppletProperties().replace("12", worldNumber.toString());
-				}
-
 				return;
 			}
 			catch (IOException e)
diff --git a/runelite-client/src/main/java/net/runelite/client/rs/WorldSupplier.java b/runelite-client/src/main/java/net/runelite/client/rs/WorldSupplier.java
index 3254595ca7..a82f180ead 100644
--- a/runelite-client/src/main/java/net/runelite/client/rs/WorldSupplier.java
+++ b/runelite-client/src/main/java/net/runelite/client/rs/WorldSupplier.java
@@ -85,30 +85,4 @@ class WorldSupplier implements Supplier<World>
 
 		return worlds.poll();
 	}
-
-	@Nullable
-	public World get(Predicate<World> filter)
-	{
-		try
-		{
-			List<World> filteredWorlds = new WorldClient(RuneLiteAPI.CLIENT)
-				.lookupWorlds()
-				.getWorlds()
-				.stream()
-				.filter(filter)
-				.collect(Collectors.toList());
-
-			Collections.shuffle(filteredWorlds, random);
-
-			if (filteredWorlds.size() > 0)
-			{
-				return filteredWorlds.get(0);
-			}
-		}
-		catch (IOException e)
-		{
-			log.warn("Unable to retrieve world list", e);
-		}
-		return null;
-	}
 }