Terraria has both single player and multiplayer modes.

In multiplayer, several people can meet up, mine, build, slay monsters, and in general play together.

The items you are carrying in your inventory in single player get carried over to multiplayer and vice-versa (They are also transferred between single player worlds).

Multiplayer worlds function no different than in single player ones, other than you can have friends playing with you and more monsters will spawn than usual. This is not affected by the number of players, only by the fact that there is more than 1 player. A multiplayer world can be played in single player mode and vice versa.

The maximum number of players allowed in a server depends on the settings of the server. Some Multiplayer PvP game modes can be 'invented' if enough coordination is met. Such battlegrounds and large scale PvP game tutorials can be found here.

To set up an easy PvP battleground:

• Get around 8-12 players.

• Split into 2 or more teams.

• Make 2 or more bases, with 1 bed inside each to set your spawn point at.

• Enable PvP.

• Battle.

Server ListsEdit

• http://www.listofservers.com (Anyone can post their Terraria servers here for free! Hamachi included!) (site down?)
• terrarianet.com
• terrariaonline-servers.com
• terraria-server-list.com

• terraria-serverlist.fr (French serverlist)

Hosting a serverEdit

One can setup a Multiplayer server either by using the Host & Play feature, command line functions, or by using the Server Console which are a must if making a Dedicated Server.

There are also PVP and team buttons. The team button allows you to join a team, and thus letting you see your teammates' distance and health. You cannot harm your teammates except with means that would harm yourself as well (explosions, throwing sand). The PVP button, once activated, lets players attack you (if they aren't on your team).

Currently, Terraria connects by IP input (your IP address can be seen here or alternatively here).

One of the larger, feature rich Terraria server-lists can be found here.

An older way to create local servers is with Hamachi, a tool that allows you to connect to other people within your Hamachi group.

Guide to Hosting a Server (No Hamachi)Edit

N.B. This is for people who don't like watching youtube. However, there are plenty of resources on youtube and all over the internet. This is not recommended for proper dedicated servers. You must use console to be able to keep it separate from client-side since as of 1.0.5 the in game hosting tool lets you play on the same application as the one with that is running the server.

First of all there are few things to keep in mind. What kind of server are you hosting? Is it for a few friends just playing around or is it a large public server for everyone (preferably non-griefers) to use. The reason for it is the preformance issue (let's not get into this). In short have a good computer/dedicated serverand good-reliable internet.

Now, the things we need to do is as mentioned above. The host needs to create a server, find the port it uses and then open that port. Seems a lot of work to play with friends but that's how most servers work.

Let's find our internal IP address first. If you already know your internal IP address (ie. the ip address for your modem) then just skip this paragraph. Go into the windows and open up the windows command prompt (cmd.exe). This is usually found by clicking 'start' button and typing into the search tool 'cmd'. Look for the cmd exe and launch it. From there you'll find the good-old DOS format window. Type in 'ipconfig' and a list will appear. Scroll all the way up and look for the... something-something "IPv4...". On the right column of the same line you'll see your internal ip address. Remember it.

N.B. Some version of the ipconfig like the XP does not show you the internal ip address (IPv4). Instead shows you the external ip address (so called local ip). You must look for it in the manual provided with the modem or you must look for it over the internet.

Now we have our internal ip address open your web browser. Then type in your internal ip address into the address box. Enter it and you'll find it asks for your password. It usually is user: admin, password: admin or password. If it isn't then someone who set up your modem has changed it, well good luck finding it... Once you're in the local page of your modem look for something in the lines of "application" or "portfowarding" or "gaming" (the reason it's so vague is that different types of modem have different layouts for their page). Create a new port fowarding. It usually is either just filling out a box and enable it (most people forget). If it isn't and its a whole lot of shamone then try using this site to find out how to use your modem setup (note that it keeps asking you to buy stuff, don't, just skip it on the top right corner).The portfoward website tells you how to setup ports but just learn upto how you can open up ports because Terraria have different ports.

Since we have the port number (7777 by default) type it into all the extrnal port (both if you have a range) and internal port. Make a name for it if you want, so you don't forget. Activate the configuration.

Launch Terraria. Go to multiplayer. Start to host a server (via "Host & Play". Choose a map you already have or start a new one. Choose your character. By default the port is 7777. Leave as that. Leave passwords blank if you want it to be open. It will tell you that the server is launched and tells you the port. Remember the port number (if its not 7777). You'll now be in the game with your chosen character. You do not need to port-foward if it already has been open.

All you need to do now is to get the external ip address. You can do that with the one mentioned above or any other ip checker. When joining you and other must use the external ip address not the internal one. Also you must note some ISP will not give you a static external ip address so it may change when you restart your modem. Check it always when you restart your sever.

If you are hosting and joining a game over the same modem, for example if you're trying to LAN on the same wifi connection at your house, then the ip addess that you enter into the Terraria "Join" page is the same as your IPv4 number, not your external IP address.

Now you're ready. To test your server invite others to join your server.

If you want to make changes or modify your server you must use your Server Console.

Anti-Cheating MechanismEdit

The game has a built in anti-cheat mechanic, that will kick you if you try to cheat.

Sometimes though the game considers using the Aqua Scepter cheating, and you will get the message shown on the picture. It will also kick you for building too fast, using the Minishark and other fast projectile weapons in battle (especially Bosses). The Vilethorn is also a weapon that can trigger an auto kick. It can also kick the host. This is most likely a bug and was thought to be fixed in the future, but most likely will not be.