Game system, game apparatus and computer program for game

A game apparatus comprising:

• an input device for outputting signals when operation members mounted thereon are operated;
• a game information storage device for storing plural pieces of tune data for reproducing each tune and operation timing data being associated with each of the pieces of tune data and deciding operation timings of operating each of the operation members to the tune to be reproduced;
• a display device for displaying some image;
• an operation guiding device for, based on the operation timing data of the tune reproduced by the reproduction device, informing a player of the operation timing of the operation member to the reproduced tune via the display device,
• wherein the game information storage device stores background image data for a game background image displayed by the display device together with the reproduced tune, and
• the game apparatus further comprises:
• a tune reproduction device for reproducing a tune based on the piece of tune data;
• a break position monitoring device for, during which the tune is reproduced, monitoring at least one break positions being set in units of beats in the tune;
• and
• a background image control device for controlling appearance of modification of the game background image so that the appearance of modification is different between before and after the break position depending on play situation of the player, when the break position monitoring device recognizes the break position in a middle of the tune being reproduced;
• wherein
• the game information storage device further stores a plurality of types of image change parameters with respect to a common modification portion, each type of image change parameter indicating an amount of modification of the modification portion and being correlated with different maximum and minimum level number combinations from each other so that an amount of modification per level is different depending on the type of image change parameter even for the same play situation,
• at least one type of image change parameter being correlated to a certain maximum and minimum level numbers is associated with the image data for the game background image, the modification portion being a portion that is modified in the game background image, and
• the background image control device sets a value of said at least one type of image change parameter in accordance with the current play situation and controls an appearance of the modification portion of the game background image so that the modification of the game background image occurs depending on the level corresponding to the set value of said at least one type of image change parameter.

A computer program for game, stored on a non-transitory computer readable medium, being encoded to allow a game apparatus to function as:

• an input device for outputting signals when operation members mounted thereon are operated;
• a game information storage device for storing plural pieces of tune data for reproducing each tune and operation timing data being associated with each of the pieces of tune data and deciding operation timings of operating each of the operation members to the tune to be reproduced, and background image data for a game background image displayed by the display device together with the reproduced tune;
• a display device for displaying some image;
• a tune reproduction device for reproducing a tune based on the piece of tune data;
• an operation guiding device for, based on the operation timing data of the tune reproduced by the reproduction device, informing a player of the operation timing of the operation member to the reproduced tune via the display device,
• a break position monitoring device for, during which the tune is reproduced, monitoring at least one break positions being set in units of beats in the tune;
• and
• a background image control device for controlling appearance of modification of the game background image so that the appearance of modification is different between before and after the break position depending on play situation of the player, when the break position monitoring device recognizes the break position in a middle of the tune being reproduced;
• wherein
• the game information storage device further stores a plurality of types of image change parameters with respect to a common modification portion, each type of image change parameter indicating an amount of modification of the modification portion, and being correlated with different maximum and minimum level number combinations from each other so that an amount of modification per level is different depending on the type of image change parameter even for the same play situation,
• at least one type of image change parameter being correlated to a certain maximum and minimum level numbers is associated with the image data for the game background image,
• the modification portion being a portion that is modified in the game background image, and
• the background image control device sets a value of said at least one type of image change parameter in accordance with the current play situation and controls an appearance of the modification portion of the game background image so that the modification of the game background image occurs depending on the level corresponding to the set value of said at least one type of image change parameter.