Abstract: Disclosed herein are an apparatus and method for providing a game. The apparatus for providing a game includes storage configured to store information about a plurality of characters held by a user in a game, and a controller configured to provide information corresponding to a character, satisfying a predetermined condition among the plurality of held characters, to the user.

Abstract: Disclosed herein are an apparatus and method for providing a game. According to an aspect, there is provided an apparatus for providing a game, the apparatus including: a controller configured to generate an image based on input from a user who plays a game, to generate a game object by matching at least one effect to the image, and to provide the effect corresponding to the game object when a request for the use of the game object is received in the game; and storage configured to store the game object.

Abstract: The present disclosure provides a method of controlling a probability of a probability-based item provision system, which includes measuring an amount of use of an item provision system during a first time interval, comparing the measurement result with a first threshold, and changing the probability of the item provision system within a predetermined range during a second time interval after the first time interval, based on a result of the comparing.

Abstract: A method of transaction between a first cryptocurrency transacted based on a first blockchain and a second cryptocurrency transacted based on a second blockchain includes obtaining first transaction information with respect to a first transaction in which a first user transmits the first cryptocurrency to a second user, and second transaction information with respect to a second transaction accompanying the first transaction and in which the first user receives the second cryptocurrency from the second user; if the first transaction information satisfies terms of agreement between the first user and the second user, adding, to the first transaction information, first condition information depending on validity of the second transaction information and activating the first transaction of the first cryptocurrency; and digitally signing the first transaction information to which the first condition information is added, to prove the terms of agreement, and transmitting the first transaction information to a node

Abstract: The disclosure introduces a user authentication method Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), the user authentication method including: determining a correct answer pattern having at least one correct answer direction; generating, with respect to each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from movements in other directions with reference to the correct answer direction; displaying a CAPTCHA interface corresponding to the correct answer pattern and including an arrangement of the generated animation; receiving a direction input from a user; and determining whether the user has been authenticated according to a result of comparing the direction input with the correct answer pattern.

Abstract: Disclosed herein are a method and apparatus for installing a game client. According to an embodiment, there is provided a method for installing a game client by which an apparatus for installing a game client installs a game client, the method including: establishing a first session when the installation of a game client has started; storing play information acquired based on the first session; and updating the account of the game client based on the play information when the installation of the game client is completed.

Abstract: According to an aspect of the disclosure, a game providing method is provided. The game providing method includes: displaying a game interface comprising a plurality of blocks; detecting a first interaction on a first block among the plurality of blocks; specifying the first block as a trigger block in response to the first block; detecting a second interaction on a second block adjacent to the first block; and performing, based on characteristic of the second interaction, either one of switching positions between the first block and the second block, and specifying the second block as the trigger block.

Abstract: A method of enabling a user to play a game with a virtual friend includes determining a virtual friend having first feature information on the basis of user information, determining a message from the virtual friend to be transmitted to the user on a basis of the user information and the first feature information, transmitting the message to the user; and when the user who has received the message accesses a game, transmitting an invitation message from the virtual friend to the user within the game.

Abstract: According to an aspect of the disclosure, a game providing method is provided. The game providing method includes: displaying a game interface comprising a plurality of tiles and a plurality of blocks respectively arranged on the plurality of tiles; changing an arrangement of the plurality of blocks on the plurality of tiles by identifying at least three blocks which satisfy a predetermined condition based on a user interaction; displaying a first graphic representation regarding the at least three blocks; and displaying a second graphic representation regarding at least three tiles respectively corresponding to the at least three blocks based on types of the at least three tiles.

Abstract: A method of acquiring probability information of a gacha system includes: acquiring, by a first user terminal, second gacha event information that is information about a gacha event occurring in a second user terminal; acquiring, by the first user terminal, third gacha event information that is information about a gacha event occurring in a third user terminal; acquiring probability information of the gacha system based on the acquired second gacha event information and third gacha event information; and displaying the acquired probability information of the gacha system.

Abstract: A method of playing a game between a plurality of users and recording a game result thereof includes: registering the plurality of users including a first user and a second user in a blockchain network; performing, by the first user and the second user, a game according to execution of a first game application; obtaining, from the first game application, first game result information as a game result the game played between the first user and the second user; and updating game history information of the blockchain network based on the first game result information.

Abstract: Provided is a game providing method comprising storing a plurality of codes for changing a property of an object in an online game; receiving a code provided by a user of the online game; determining whether the received code corresponds to one of the plurality of codes; and, based on determining that the received code corresponds to one of the plurality of codes, changing, based on a predetermined condition, the property of the object with which the user interacts from a first value to a second value.

Abstract: Disclosed herein are a method of providing a game based on the security level of a terminal and an apparatus for performing the same. The method of providing a game based on the security level of a terminal includes: when a user accesses a game using a terminal, checking the security level of the terminal for the account of the user; and determining whether to allow the disposal of in-game goods according to the found security level, but providing the game so that the game can be played regardless of the found security level.

Abstract: Disclosed herein are an apparatus and method for providing a game. According to an aspect, there is provided an apparatus for providing a game, the apparatus including: a controller configured to generate an image based on input from a user who plays a game, to generate a game object by matching at least one effect to the image, and to provide the effect corresponding to the game object when a request for the use of the game object is received in the game; and storage configured to store the game object.

Abstract: An apparatus for controlling an object may include a communicator configured to communicate with a first user terminal and a second user terminal, and a processor configured to control a first object corresponding to a first user in a virtual world to be displayed, configured to control the first object to move in the virtual world in response to a movement control of the first user, configured to randomly select at least one candidate object in response to a morphing control of the first user, and configured to change the first object to a second object when the first user selects the second object from the at least one candidate object. Methods for controlling an object are also provided.

Abstract: Disclosed herein are an apparatus and method for providing a game. The apparatus for providing a game includes storage configured to store information about a plurality of characters held by a user in a game, and a controller configured to provide information corresponding to a character, satisfying a predetermined condition among the plurality of held characters, to the user.

Abstract: An apparatus for controlling an object may include a communicator configured to communicate with a first user terminal and a second user terminal, and a processor configured to control a first object corresponding to a first user in a virtual world to be displayed, configured to control the first object to move in the virtual world in response to a movement control of the first user, configured to randomly select at least one candidate object in response to a morphing control of the first user, and configured to change the first object to a second object when the first user selects the second object from the at least one candidate object. Methods for controlling an object are also provided.

Abstract: Disclosed is a user interface providing method for controlling a game play in a portable device. A user interface providing technology determines whether a received first touch input is a touch input for setting a GUI, determines a GUI setting mode, and activating at least one GUI element for controlling the game play in response to the GUI setting mode.