the game was released, Adam Clayton, a fifteen-year-old from Salt Lake City, discovered it and sent a letter of explanation to Atari. Robinett had already quit the company by this point, so Atari tasked designers with finding the responsible code. The employee who found it said that if he were to fix it, he would change the message in the game to say "Fixed by Brad Stewart". Furthermore, the cost of creating a new read-only memory (ROM) mask, or memory chip, was around at the time of the game's release, making this change a costly endeavor. Steve Wright, the director of software development of the Atari Consumer Division, argued for retaining the message, believing it gave players additional incentive to find it and play their games more, and suggested these were like Easter eggs for players to find. Atari eventually decided to leave the Dot in-game, and dubbed such hidden features "Easter eggs", saying they would be adding more such secrets to later games. Wright made it an official policy at Atari that all future games should include Easter eggs, often limited to being the initials of the game developer. The Easter egg is accessed by setting difficulty levels 2 or 3 and first retrieving the Gray Dot from the Black Castle catacombs. The dot is a single pixel object which is invisibly embedded in the south wall of a sealed chamber accessible only with the bridge, and the player must bounce the avatar along the bottom wall to pick it up. The dot can be seen when in a catacombs passage or when held over a normal wall, and becomes again invisible when carried or dropped in most rooms. The dot is not attracted to the magnet, unlike all other inanimate objects. The player must bring the dot along with two or more other objects to the east end of the corridor below the Golden Castle. This causes the barrier on the right side of the screen to blink rapidly, and the player avatar is then able to push through the wall into a new room displaying the words "Created by Warren Robinett" in text which continuously changes color. The text was removed from the version on the Atari Classics 10-in-1 TV Games standalone gaming unit, replaced with "TEXT?" It has been included in most subsequent reissues of the game. Reception Adventure received mostly positive reviews in the years