Digimon World 3 (デジモンワールド3 Dejimon Wārudo 3), also known as Digimon World 2003 in Europe and Australia, due to the second game not being available for those regions, is a role-playing video game created by Bandai for the PlayStation. The series is the third installment in the Digimon World series and it was first released on June 5, 2002 in the US and then on July 4, 2002 in Japan and November 15, 2002 in Europe. You play as a child called Junior who enters an online virtual reality MMORPG called "Digimon Online", which is run by the "MAGAMI" corporation. A terrorist attack on the Internet traps Junior and his friends inside the game and he sets out to stop them with his Digimon partners.
Source: Wikipedia, "Digimon World 3", available under the CC-BY-SA License.