This invention provides means for constructing a changeful virtual space. A universal AO 41 generates a user manager 51, an object manager 52, and an agent manager 53 and then a user object 61, an object AO 71-1, and an agent AO 81. On the basis of a configuration file created by a user, Event1Managers...http://www.google.com.au/patents/US6732146?utm_source=gb-gplus-sharePatent US6732146 - Information processing apparatus, information processing method, and information providing medium providing a changeable virtual space