One contestant at a time would play against the house. The prize at stake was described and then enclosed by a pair of transparent sliding doors. The doors were then padlocked.
The contestant would then be told the category in play and face the gameboard. The gameboard was a seven-by-ten grid of panels numbered panel. The panels appeared to be gray but a light bulb behind each would illuminate the question and event in play. The light bulb also indicated the contestant's progress up the gameboard. The object for the contestant was to get to panel seventy in fifteen chances.
Three constantly rotating wheels designated "Steps", "Bonus", and "Penalty" tell how far a contestant may move (from one to ten panels) on the gameboard. To begin a turn, the player stops the Steps wheel and advances along the gameboard. When the lit panel represents a question, the contestant must respond correctly to not be penalized. A correct answer allows the contestant to progress from the current panel.
The first space and every tenth space thereafter is designed "Safe", a contestant may progress without penalty from here. Also, an incorrect response sends a contestant back to the nearest Safe. Landing on a Penalty sends a player back a random number of panels. Landing on Bonus sends a player forward a random number of panels.
Anytime the player uses the Steps button a chance is counted down. If the player can get to space seventy before the last chance is used up then that player earns one of the seven keys.
When a player has earned a key, the player may try to use earned keys to open the lock to the prize. If the player didn't earn the key that unlocks the prize then the game is over and the player loses. If the player tries to play another quiz and fails to get to space seventy in fifteen chances then the game is over and the player loses.