INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING APPARATUS, STORAGE MEDIUM, AND INFORMATION PROCESSING METHOD

An example of an information processing system executes a competitive game consisting of a plurality of turns. In each turn, one or more candidate objects, which are selected by a user from among a plurality of candidate objects placed in a first area, are placed as ally objects in a second area in a battle area. One or more enemy objects are placed in a third area in the battle area. The information processing system, based on the positions of placed objects that are the ally objects or the enemy objects placed in the battle area, determines, for each placed object, an attack turn, and an attack target out of the placed objects. The information processing system executes an attack on the attack target by the placed object according to the attack turn, thereby decreasing a life parameter associated with the placed object that is the attack target.