MMO is an abbreviation for "massively multiplayer online," a kind of game that allows an extremely large number of concurrent players in a shared world.

learn more… | top users | synonyms (2)

135
votes
31answers
14k views

How do you prevent inflation in a virtual economy?

With your typical MMORPG, players can usually farm the world for raw materials essentially forever. Monsters/mineral veins/etc are usually on some sort of respawn timer, so other than time there ...
91
votes
23answers
38k views

Why is it so hard to develop a MMO? [closed]

I want to develop a MMO like World of Warcraft, but some basic research says that is going to take months (if not years) and cost a lot of money. I'd like to know why.
49
votes
10answers
12k views

What kind of databases are usually used in an MMORPG? [closed]

Do people write their own DB for some reason?
33
votes
14answers
4k views

MMORPG design for time-limited players

I believe that there is a significant market of players who would enjoy the exploration and interaction aspects of MMORPGs, but simply don't have the time for the endless grinding marathons which are ...
29
votes
8answers
2k views

Profanity filter for an MMO chat

We are developing an MMO using Smartfox Server. The targeted audience is kids from 7 -12 years. There is a global chat option in this MMO. Whatever the user types in a textbox get displayed next to ...
28
votes
4answers
2k views

What has stopped MMORTS games from being successful?

We all know that there have been attempts to create commercially successful MMORTS games, but all have failed. By failed, I mean that they didn't get really popular in the gaming community. Why is ...
25
votes
6answers
3k views

Who does the AI calculations in an MMO?

I am building an MMO and want to add NPCs. The thing is I don't know the basic design. What does the calculations, the clients or the server? I would understand the server calculating events and ...
25
votes
10answers
8k views

Browser-based MMOs (WebGL, WebSocket) [closed]

Do you think it is technically possible to write a fully-fledged 3D MMO client with Browser JavaScript - WebGL for graphics, and WebSocket for Networking? Do you think future MMOs (and games ...
24
votes
7answers
2k views

Does an inventory limit in an MMORPG make sense?

I am currently developing a simple 2d MMORPG. My current focus is the inventory system. I am currently wondering if I should implement a limit on what a player character can carry. Either in form of ...
24
votes
4answers
4k views

How is load balancing achieved in MMOs?

I believe it's a common requirement of MMOs that processing for a single shard or realm can be done over several servers to ease the load. I'm curious as to how this can be done whilst maintaining a ...
22
votes
4answers
2k views

What data structure should I use for a Diablo/WoW-style talent tree?

I'm considering implementing a talent-tree system for an online RPG, similar to that seen in World of Warcraft, where acquiring a skill unlocks the next "tier" beneath it in the tree. Does anyone ...
21
votes
4answers
3k views

Should I assign a unique ID to individual units of game currency?

I am currently making a MMORPG. At the moment, I am working on the currency part of the game but I'm confused whether I should assign a unique serial number for every unit of the currency generated. ...
19
votes
4answers
4k views

Should collision detection be done server-side or cooperatively between client/server?

I am working on an online game that will have very heavy collision detection processing. Player models will collide with other players, mobs, structures, terrain, and solid objects that only exist ...
19
votes
7answers
14k views

What languages are used to develop MMORPGs like EVE Online and WOW?

As I understand it, MMORPGs are games that run on your computer like any other normal 3d video game but, with each action that happens with in the game, changes are made to the universe via HTTP calls ...
19
votes
3answers
3k views

Low traffic client synchronization with server in MMO

I am implementing MMO where player flies in space on his starship controlling it with arrow keys and cooperate with other players. I want to implement it so that player will be able to dodge his ship ...
18
votes
9answers
1k views

How do/should MMOs handle disconnection during PvP?

In an MMO (not even necessarily an MMORPG) what are some techniques for dealing with players disconnecting in the middle of PvP? In particular - how do you avoid adversely affecting people who get ...
18
votes
5answers
1k views

Tricks in game mechanics to avoid dealing with network lag compensation?

Implementing network lag compensation is hard, how to avoid it? Maybe it's possible to use tricks and build game mechanics in such a way that lag would be percieved as a non critical or even as a ...
15
votes
4answers
2k views

Why do MMORPGs still use multiple servers?

MMORPGs, some MOBAs like League of Legends or even StarCraft 2 usually force you to pick a server. Usually they are US, EU and SEA, in MMORPGs many per location. I can see that that was necessary a ...
13
votes
6answers
2k views

Recommended RPG game that can be used to learn game Modding? [closed]

I would like to learn game development via game modding. RPG/MMORPG is one of my favorite genres. Could someone recommend me a good and recent ( I would like to play the game as well) game to learn ...
13
votes
4answers
2k views

How should I track players' real-time positions in an MMO?

How do you keep track of the positions of the players in a MMORPG? I read that you can use either a database or you can store the coordinates in files. I tried using a database but it was slow. How ...
13
votes
2answers
718 views

How should I check if a player has completed an achievement?

I'm making an MMO game and I just got to a point where I need to implement achievements... How do I do that? The most straight forward thing to do would be to run this once every 100ms,: for a in ...
13
votes
3answers
2k views

Should I keep login server apart from game server?

I'm thinking of making a MMO server, and I've been looking at how other games structure their network. One of the things I've noticed is that there's always a Login server and then the game server(s). ...
13
votes
5answers
819 views

How to nerf something without the player community hating you? [closed]

No matter how well you conceptualize an online game, there will always be certain gameplay elements which will turn out to be vastly overpowered and dominate the gameplay. The obvious solution in ...
13
votes
3answers
3k views

Tips for implementing MMO quest mechanics?

What tools, patterns, or best practices would you recommend to implement the quest mechanics given below listed requirements? I am talking about software architecture (how generic should you be) and ...
12
votes
2answers
416 views

How can I implement Offline Skilling

An example of offline skilling would be EvE Online. Your character (pilot) does not gain skills by getting experience. Instead, your character gains skillpoints towards a skill you are training ...
12
votes
4answers
981 views

Game log format for MMO servers

A log of game events (as opposed to error / debug logs) for an entire cluster/shard is very useful for a commercial MMO that is in a live production environment, providing vital support for customer ...
11
votes
2answers
2k views

Is this the right architecture for our MMORPG mobile game?

These days I am trying to design architecture of a new MMORPG mobile game for my company. This game is similar to Mafia Wars, iMobsters, or RISK. Basic idea is to prepare an army to battle your ...
11
votes
4answers
927 views

What are the reasons for MMOs to have level caps?

In many MMOs players character progression is artificially capped, e.g. by level 60 or 90 or 100 or whatever. Why do MMOs have these level caps in the first place? Why not just allow characters to ...
10
votes
3answers
1k views

Is knowledge of hacking mechanisms required for an MMO?

Say I was planning on, in the future (not now! There is alot I need to learn first) looking to participating in a group project that was going to make a massively multiplayer online game (mmo), and my ...
10
votes
3answers
604 views

What legal matters do I need to consider when releasing an MMO?

Let's say I've finished programming an indie MMO game similiar to Tibia. I've got: a stable server application ready to launch; a tested, bug-free, working client application ready to play; the ...
10
votes
7answers
431 views

How can I make permanent death in a MUD seem acceptable and fair to players?

I have considered writing a MUD for years, and I have a lot of ideas my friends think are really cool (and that's how I'd hope to get anywhere -- word of mouth). Thing is, there's one thing I have ...
10
votes
3answers
886 views

How do you design a record/replay system for a frequently changing game?

I'm working in a free MMORPG and I have a problem. I'm (with other people) developing a video recording system for the game. The idea is basically: we record all the packages sent & received with ...
9
votes
4answers
865 views

Is there a way to make a dynamic world such as a MMORPG horizontally scalable?

Imagine a open-world of 500+ players with data changing as fast as 20 updates/player/second. Last time I worked in a similar MMORPG, it used SQL, so obvioulsy it couldn't query the DB all the time. ...
9
votes
6answers
1k views

What is the name of the AI/algorithm used by most MMOs for monsters or mobs?

Is there a standard name for the (fairly dumb) AI that most MMOs use where you 'aggro' a monster/mob when you are within a certain radius of it, and the monster chases your character for a set amount ...
9
votes
2answers
2k views

MMO techniques, algorithms and resources for keeping bandwidth low?

Are there any resources and documentation on how current MMOs handle the action and movement data from the compression to the handling on the client? Any resources for movement prediction algorithms? ...
8
votes
6answers
2k views

How come the 3d graphics and animations of MMORPGs are usually worse than non-online 3d games?

I have noticed that in general it seems like the 3d graphics and animations for MMOs and MMORPGs seem not as seductive and polished as the graphics for normal, non-online 3d games. How come this is ...
8
votes
9answers
2k views

MMOs based on .Net? [closed]

Are there any real MMOs where the server engine is based on .Net?
8
votes
3answers
2k views

How should I collect user behavior data in an MMO?

In an MMO, and I'm trying to collect data about user behaviors for the purpose of tweaking the game rules to achieve maximum user satisfaction. Clearly one way to do it is to hand-roll specific ...
8
votes
2answers
2k views

Would using Lua scripts to define game logic for an MMO server be a lot slower than compiled in C++?

I am using an entity system for my MMO server and I was thinking about defining the behavior of "actions" using Lua scripts. The server is written in C++. I am not very familiar with the speed/memory ...
8
votes
2answers
362 views

Why would an online MMO throttle actions per day?

I started playing Die2Nite and was surprised that it has such a strict limit on the number of actions per day. After a while, I figured it was just part of the charm. I also started playing Magic ...
8
votes
4answers
2k views

Anti-Cheat for MMOs issues and solutions? [closed]

Most online games suffer for this problem and there are some software companies out there to cover this but recently from what I've seen most companies are trying to avoid those programs creating ...
8
votes
2answers
3k views

Information on seamless MMO server architecture

I'm looking for any material on seamless MMO servers! I do have a few articles in the "Massively Multiplayer Game Development" books and "Game Programming Gems 5." Has anyone experience on that topic ...
8
votes
2answers
915 views

How to manage all the NPC/AI objects on the server?

I'm writing a simple MMO, and currently have the the server-client architecture in place for multiple users to see each other and be able to move around together...now its time to add enemies. Was ...
7
votes
5answers
796 views

Is it possible to have vehicles with physics like GTA in an MMO game?

I haven't seen any MMO games with vehicles with realistic physics and that could achieve high speed, why? Is it because of network bandwidth limitations? Second Life has vehicles, but physics are ...
7
votes
1answer
1k views

MMO Collision detection

I am building a MMO game server for a 2D game and am currently implementing the collision detection, and I am would like to know what I should do. Lets say I have 1000 players playing and 10,000 ...
7
votes
4answers
653 views

Need an engine for MMO mockup

What I don't need is an MMORPG engine, at the moment. What I do need is a flexible easy-to-use engine that I can make a mock-up with. I don't need support for more than 10 players in an instance, so ...
7
votes
4answers
1k views

Multiplayer online game engine/pipeline

I am implementing online multiplayer game where client must be written in AS3 (Flash) to embed game into browser and server in C++ (abstract part of which is already written and used with other ...
7
votes
5answers
1k views

Do you fill all your game data in huge excel tables? Are there any better method?

I really want to know how many game designers prefer to work with a huge table for all items, another table for all skills, and even another table for all mobs in a MMORPG. And these tables may grow ...
7
votes
2answers
588 views

How to synchronize actions like jump in multiplayer?

I am a newbie game developer and I have been researching about multiplayer games. I observed that there's always some latency, the players always get updates from past actions. But there are ...
7
votes
4answers
413 views

Job title for a roleplaying event gamemaster in an online RPG?

I'm considering creating a position in an online RPG where the responsibilities would mainly involve conceiving roleplaying-oriented events and plotlines and executing on them using developer tools ...