• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.391-393
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• 2006

In this paper, we develop a portable game device with uncompressed HD video and high quality sound output. Portable game devices support not only game function but also various complex functions recently. It especially supports TV-Out port to play realistic game, connecting a large screen display device. But the video and audio output signals of conventional TV-out port have the low performance and these signals are analog output. So, it is difficult that the users enjoy realistic game with benefit of high resolution digital TV. We propose the game device output with uncompressed digital signal, which has no delay of video/audio signal, also has strong immunity to external noise. Since it supports a high resolution video and high quality sound, users can playa realistic game. First, we implement the HDMI to the game device and we test reliability with the various resolutions video inputs and audio inputs. The proposed method can be applied multimedia devices requiring high performance output function as well as portable devices.

• Journal of Korea Game Society
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• v.15 no.2
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• pp.43-52
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• 2015

This Study suggests the user-friendly game playing method of rhythm dance game focusing on the natural interaction between music and user's movement. When the existing rhythm dance games have given the limitation to users, this study chose the game playing method using beat that is consist of basic element in dance music for minimizing the limitation. Beat feeling method automatically figures out each body position value extracted with Kinect that divided into three parts of shoulder, knee, and head. Accoring to this process, users can play the game to individual dance style, not fixed rules for game.

• Journal of Korea Game Society
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• v.19 no.6
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• pp.61-70
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• 2019

In this paper, we apply reinforcement learning in the field of management simulation game to check whether game agents achieve autonomously given goal. In this system, we apply PPO (Proximal Policy Optimization) algorithm in the Unity Machine Learning (ML) Agent environment and the game agent is designed to automatically find a way to play. Five game scenario simulation experiments were conducted to verify their usefulness. As a result, it was confirmed that the game agent achieves the goal through learning despite the change of environment variables in the game.

• The Journal of Information Systems
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• v.27 no.3
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• pp.141-160
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• 2018

Purpose The purpose of this study is to verify mobile game users' perceived utilities about real (price) and virtual (Ruby) currencies, which are the major factors of in-app purchase (IAP) widely used as a business model in a mobile game industry. Design/methodology/approach By using sales volume and sales frequency data for products sold in an 'S' mobile game from the 'D' mobile game company, we conducted a conjoint analysis according to the procedure recommended by Bicheno (2009). Findings The results of this study indicate that (1) mobile game users have greater utility for a virtual currency (Ruby) than for a real currency (price), (2) mobile game users' utility for virtual (Ruby) and real (price) currencies varies depending on sales volume and sales frequency, as well as (3) mobile markets (e.g., Google Play Store vs. Apple App Store), and (4) mobile game users have greater utility for a virtual currency (Ruby) which can be used readily than later.

• Journal of Korea Game Society
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• v.11 no.1
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• pp.37-46
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• 2011

Due to the advent of high performance feature-phone and smart-phone, the scale of mobile games and the member of developers are increased rapidly. The production process of mobile games is changing to meet these needs. Tools for efficient program development are produced worldwide, but tool's research for the event direction is inadequate. In the event direction, the game designers play more important roles than programmers. In this paper, we develop the mobile game event direction tool for game designers. And we make the events of the released mobile games to test the efficiency and usefulness of tool that we developed. The result shows that the performance is enhanced about 15% in development period.

• Journal of Korea Game Society
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• v.16 no.6
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• pp.143-150
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• 2016

Programming is a difficult meat for novices. Educatees nowadays start to play games before they first attend formal education. Serious games offer tools that may have potential to support programming trainers to become more engaged on their learning through a learn while having fun approach. This paper aims to design and implement serious game for programming education. Our serious game substitutes game rules and objects for elements of programming language. We will begin by describing the game mechanics, followed by the general system architecture, finalizing with a small conclusion. We also discuss the implications of our work for the development of the serious game that support the identified features and teach programming concepts.

• Journal of Korea Game Society
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• v.17 no.2
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• pp.85-94
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• 2017

Over the recent years, there has been a sudden surge in interest over character-related products among mobile game developers in South Korea as a business strategy to extend mobile game lifespans. However, even with the majority of mobile game players aging around 18~35 and higher, there has been a lack of study regarding design preferences and consumption tendencies of adult players-or kidults-when it comes to character-related products. In this study, three distinctive decision patterns among kidults were identified using an online Q-Sort method: (a) Character Oriented, (b) Item Oriented, and (c) Character-item Oriented. The similarities and differences of these three types are further analyzed to provide insight into important factors that play decisive roles in purchasing decisions made by kidults. The results from this study can aid mobile game developers in establishing reference points for future character business directions.

• KIISE Transactions on Computing Practices
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• v.21 no.5
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• pp.343-350
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• 2015

While many games have been published that are used with input-devices such as a mouse and keyboard, the number of games that can recognize the behavior of a human utilizing devices such as Kinect and Wii has increased. In this paper, we present the development of a baseball game that utilizes a Leap Motion Controller. A Leap Motion Controller recognizes accurately the movement of a user's fingers. Our implemented game consists of characters, a background and animation. It is a moving animated game in which the users play a game in point of view of a third person. The major feature of our game is that the game players can enjoy the game using a Leap Motion Controller.

• Korean Journal of Family Welfare
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• v.23 no.4
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• pp.613-632
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• 2018

The purpose of this study is to review Chinese policy on internet game addiction, and understand the level of internet game addiction, anxiety, and life satisfaction levels, and examine how game addiction affects life satisfaction with anxiety as a medium among male university students in China. In order to achieve the goals of the study, a survey was conducted on 240 male university students in Harbin, China. The research results are as follows. First, the internet game addiction level of male university students was at a relatively low level. Only 2.9% scored over 36 points, the litmus test for the category of clinical criterion, whereas the majority belonged to the general user group. Meanwhile, anxiety was at an intermediate level, along with a relatively high level of life satisfaction. Next, internet game addiction showed a positive correlation with anxiety, and a negative correlation with life satisfaction level. A negative correlation was found between anxiety and life satisfaction level. Lastly, anxiety was found to play a complete mediation role, as a mediator variable between internet game addiction and life satisfaction level. Based on the above results, policy and practical suggestions are proposed to improve the mental health of university students and to prevent and treat game addiction within China.

• Asia pacific journal of information systems
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• v.32 no.3
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• pp.684-705
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• 2022

A new trend has been emerging in recent years, with video game live streaming becoming a meeting ground for gamers, as well as a marketing strategy for game developers. In line with this trend, the emergence of the "Let's Play" culture has significantly changed the manner in which people enjoyed video games. In order to academically explore this new experience, this study seeks to answer the following research questions: (1) Does engaging in video game streaming offer the same feeling as playing the game? (2) If so, what are the factors that affect the feeling of telepresence from viewers' perspective? and (3) How does the feeling of telepresence affect viewers' learning experience of the streamed game? We generated and empirically tested a comprehensive research model based on the telepresence and consumer learning theories. The research findings revealed that the authenticity and pleasantness of the streamer and the interaction of viewers positively affect telepresence, which in turn is positively associated with the gained knowledge and a positive attitude toward the streamed game. Based on the research findings, various practical implications are discussed for game developers as well as platform providers.