Hironobu Sakaguchi, Hiroyuki Itou: Patent US5390937. Google Patents, 1992-03-16. [dostęp 2012-09-06]. Cytat: Disclosed in a video game of enhanced realism in which actual combat is closely simulated. The game is so adapted that an enemy character on a display screen may launch an attack against a player character on the same screen, even while the player character is in the process of inputting a command, at elapse of a set time period specific to the enemy character. The attack is made without an interruption in the flow of time of the game. (ang.).
