Storage medium, information-processing device, information-processing system, and information-processing method for controlling movement of game characters

Movement amount identifying unit 111 of exemplary game device 1 identifies, for each of characters, a movement amount, based on which a character is moved on a map, the movement amount being randomly determined. Movement processing unit 112 moves, for each of the characters, a character on the map based on a movement amount determined for the character. Mini-game executing unit 113 executes a mini-game on detecting that a first character included in the characters has reached a predetermined first cell on the map. When doing so, mini-game executing unit 113 starts the mini-game, the first character joining the mini-game from the start of the mini-game, and causes a second character included in the characters to join the mini-game subsequent to the first character with a delay, the second character having failed to reach the first cell as of the start of the mini-game.