用戶界面是系統運行成功至關重要的一部分，考慮如何更有效的為所有用戶構建用戶友好的人機界面也是很重要的。界面設計應減少人為錯誤。用戶界面設計的目標是讓用戶的互動盡可能簡單而又有效。在我們的系統中,我們盡可能的在每款游戲的界面提供簡單易用的用戶界面，主要是因為有不同類型的用戶和不同年齡段，在對電腦的了解和電腦的操作經驗上有不同的層次。主要有4種類型的用戶:新手,普通用戶,熟練用戶和專家。新手用戶是那些沒有任何計算機系統這方面的知識。普通用戶是對語義知識和應用程序有一點了解或對電腦了解一般但對系統的語義知識沒有準確的了解。熟練的用戶也叫斷斷續續的用戶，他們對應用程序有一個合理的語義知識，但不記得使用界面時必須運用語法信息。專家用戶對系統是如何構造的有一個深刻的理解,以及它如何運作。所以在設計任何類型的屏幕或接口之前,我們首先注意下列因素:
 
The User Interface of a system is critical to the success of a system. It's also important to consider how to build user friendly human computer interface that is more effective for all users. The interface design should reduce human errors. The goal of user interface design is to make the user's interaction as simple and efficient as possible. In our system, we try our best to give simple and easy to use user interface in every game interfaces because there are different kinds of users and groups of age to play game with different kinds of levels in computer knowledge and experience. There are four main types of users: novice, casual, skilled and expert. Novice users are those who have no knowledge any computers systems. Casual users are those who have little semantic knowledge of the application or computer usage in general but not have the exact syntactic knowledge of the system. The skilled users are also call intermittent users. They have a reasonable semantic knowledge of the application but not relatively low recall of syntactic information necessary to use the interface. Expert users have a profound grasp of how the system is constructed and how it operates. So before designing any kinds of screen or interface, we focus on the following factors first:

 Who is going to use the screen and system?
 
Will be using more than one type of user?
 
Main purpose of the screen.
 
Level of user intelligence to play game.
 
Identify audio, vision, effects or animation for K12 game players.
 
Response time required.
 
Another consideration for user interface design is that groups of age may also decline in auditory abilities. For audio signals, lower frequency tones in the range of 500-1000 Hz are generally better to hear for increased age.
 
需求規格—Requirement Specification#p#分頁標題#e#
 
用戶需求—User Requirements
 
Good user requirements are needed for every project, especially computer system projects like game projects, to be successful. For game interfaces, there is some different with others. Following are the some considerations for designing game interfaces in terms of user requirement:
 
視覺效果—Vision
 
For Player vision, the developer should avoid using complex color and complicated animation. Then best color contrast is recommended and large font size needs to be required.
 
聽覺效果—Hearing
 
For Player Hearing, the developer need to be careful to reduce loud background noise, player can be disrupted when playing game. Then less use of high frequency stimuli and the speed of verbal flow has to be adjusted for game players.
 
注意力—Attention
 
For Attention, operation commands need to be minimum and stating clear instructions are recommended for all game players.
 
觸覺和動感—Touch and Movement
 
For Touch and Movement, the developer must avoid movement speed so fast. Next consideration is taking into account the difficulties of using interface, scroll bar, keyboard and mouse and also using single click is better than double click event.
 
功能要求—Functional Requirements
 
Functional requirements means to be done by identifying a function of a software system or its component and what a system should be able to do the functions it should perform. Then it has to be done by defining the necessary task, action or activity that must be accomplished. Functional requirement is the plan which is detailed in the system design for implementing functional requirements. For example, games are challenging, they typically include competition (both against a human opponent and a computer generated one). They are often story-based, include compelling characters and they keep scores. Which, if any, of these features are essential to learning still remains to be answered.
 
非功能要求—Non-functional Requirements
 
Requirement that specifies criteria that can be used to judge the operation of a system, rather than specific behaviors. Non Functional Requirements is the plan which is detailed in the system architecture for implementing non functional requirements. Game System need to be quick response time, utilization, throughput and static volumetric for performance requirements. The average response time between click and reaction should be less than 0.5 seconds for game interfaces. For usability issues, user interface must be simple and better if without scroll bars because most of the game players don't want to use scroll bar when play game and it's not suitable for game interfaces and interfaces should be appeared with the whole screen. Then, the total number of clicks for any function should not exceed five clicks for maximum because the interface will be more convenient for game players.#p#分頁標題#e#