Questions tagged [mmo]

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.

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185
votes
34answers
30k 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 ...
112
votes
22answers
70k views

Why is it so expensive to develop an MMO? [closed]

I want to develop an MMO, like World of Warcraft, but some basic research says that it is going to take a lot of time and money. I'd like to know why. Why is it so expensive to develop an MMO?
111
votes
26answers
27k views

How to deal with “Scrooge McDucks” in my fixed-currency-amount game?

I'm currently working on a very small scale MMO game planned to support approximately hundred players per server, but we're having trouble with our economical model. For various reasons we have ...
62
votes
10answers
33k views

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

Do people write their own DB for some reason?
38
votes
15answers
7k 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 ...
36
votes
7answers
10k views

What makes MMOs with real-money economies legal?

I beieve most MMOs with an in-game currency tied to a real-world currency (e.g. Guild Wars 2's gems or Eve's PLEX) do not allow in-game items to be traded back into real cash for a bunch of reasons—...
33
votes
8answers
4k 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 ...
32
votes
4answers
9k views

Why are so many games not fully voiced?

I'm wondering why so many MMOs are only partially voiced? I asked makers of games (Thimbleweed Park, in their Q&A) how expensive voiceover is, and they said it wasn't especially expensive unless ...
32
votes
8answers
5k 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 ...
30
votes
4answers
4k views

What has stopped MMORTS games from being successful? [closed]

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 ...
30
votes
6answers
7k 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 ...
29
votes
10answers
13k 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 ...
26
votes
4answers
6k views

Can inflation exist in a fixed price Mmorpg world?

Assumptions: Crafting materials are infinite. Limit is player boredom. Players can only trade through the auction house. All prices are fixed. Players cannot decide arbitrary prices. Goods in auction ...
26
votes
3answers
8k views

How to handle a large number of pickups in a MMO game

How do games like Minecraft, or really any MMO game that has pickups, handle them? Say terrain spawns 3 pickup drops of "dirt" everytime you dig said terrain. Say every item has a rotation ...
26
votes
2answers
5k views

What's the performance benefit of saving all logged in characters in MMOs in regular intervals?

The majority of MMORPGS have a Worldsave system that will save all the characters once every X hours. I guess the reason is performance. So why is this better, performance wise, than saving a ...
26
votes
4answers
9k 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 ...
24
votes
4answers
12k 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 ...
23
votes
4answers
4k 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 ...
22
votes
5answers
10k views

How does mmorpg store data?

I want to use sql database in my server.exe. lets say 1000 users online. And players will change their data when they play. And server need to save these updates. But how ? i think there two way: ...
22
votes
7answers
35k views

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

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 ...
22
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. ...
22
votes
3answers
5k 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 ...
20
votes
10answers
2k 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 ...
20
votes
5answers
3k 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 ...
19
votes
3answers
5k views

Why does editing the client's memory in some MMOs allow them to cheat?

Why editing the memory of the game client works? Why so many "Hack protection" tools coming with the clients? If I were to design a client-server game, everything would happen at the server (the ...
18
votes
4answers
6k 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 ...
15
votes
3answers
4k 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). ...
14
votes
4answers
4k 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 ...
14
votes
3answers
4k 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 ...
14
votes
5answers
1k 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 ...
14
votes
2answers
4k 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 ...
14
votes
2answers
5k 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 ...
13
votes
6answers
3k 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
2answers
953 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,: ...
13
votes
6answers
7k views

Why should I forbid real-money trading in my MMO?

I am soon going to go public with an MMO game, and I am currently in the progress of writing the terms of use I expect players to follow (no swearing, no spamming, no cheating... you get the point). ...
13
votes
2answers
487 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
4k views

How often do big MMORPG update the physics? [closed]

As far as I understand, most big games use fixed timestep to have a stable simulation. Regarding the game server, which "frame rate" do they impose? Or said it another way, what fixed timestep do ...
12
votes
2answers
3k views

Storing coordinates of every object in server side in MMOs

In an MMORPG: Is it typical or feasible to store the coordinates of every tree, bush rock.. etc in the server side for collision detection? If so, what would be a feasible way to store such a huge ...
12
votes
4answers
2k 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 ...
12
votes
4answers
3k 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 ...
11
votes
5answers
2k 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. ...
11
votes
6answers
3k 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 ...
11
votes
2answers
7k 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 ...
10
votes
3answers
2k 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
773 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 game'...
10
votes
2answers
3k 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 ...
10
votes
7answers
801 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
5answers
455 views

How can I reward dungeon masters that take risks?

I am working on a MORPG project featuring essentially two major roles: adventurers and dungeon masters. My concern is about balancing the two roles. For those who have heard of it, the principle is ...
10
votes
3answers
1k 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
6answers
1k views

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

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 ...