It was hosted by Yoo Jae-suk, Kang Ho-dong, Kim Je-dong, with Kim being successively replaced by Gong Hyung-jin, Park Kyung-lim, and Lee Hyuk-jae; only the first two were on the program since its inception.

[1] The program first aired on November 8, 2003 as a "Genuine Psychological Reasoning Variety", Real Situation: Finding X-man (실제상황 X맨을 찾아라), a corner program of Real Situation Saturday.

During this early stages of the program, popular games which became staples of the show were Team!

The team leaders changed from Kim Je-dong to Gong Hyung-jin, Park Kyung-lim, and finally Lee Hyuk-jae.

Horse Riding was abolished in April 2005 following the injury of comedian Kim Ki-wook during the game.

Teams were chosen through a lottery system, with MC Yoo serving as the "divider".

(하자!고), which was also hosted by Yoo Jae-suk, with Kang Ho-dong moving to KBS's Happy Sunday.

[4] X-man became the last program South Korea's top MCs Yoo Jae-suk and Kang Ho-dong worked together.

At the start of each episode, one celebrity would be chosen by the producer to be the X-man, whose main mission was to disrupt teamwork in his or her team and purposely throw challenges while keeping his or her identity a secret.

If the others chose correctly, any money earned by the teams was donated to charity, under the names of the various guests.