A computer-implemented method, gaming device and computer-readable medium for video game. The method includes maintaining a virtual space for a gaming environment. The method also includes repeatedly activating an event zone in the virtual space, wherein for one or more game objects having a position in the virtual space that is within the event zone when the event zone is activated, a state of the one or more game objects in the virtual space is changed. The method further includes displaying on a display device a visual representation of the event zone and a visual representation of a marker, the marker having a position in the virtual space. The method yet further includes changing the position of the marker such that a distance involving the marker and at least part of the event zone is related to a time remaining before the next repeated activation of the event zone.