Does memory play a role in games?

"Left, right, left ....wait..what was the code again?" Early in gaming, Konami gave gamers the code that would be remembered as the greatest code, the ultimate code for Contra: 30 lives. A game as hard as Contra almost everyone used the Konami code. At what point did the code become necessary for the game, impossible to beat without it? Maybe it was just a feature of the game, but everyone knew it. Everyone had it memorized. 

Memory is not always people’s strongest trait when playing games. One of the earliest uses of “memory” was the use of maps in text based games. There would be a set dungeon that the player would go through. With no map for them to see visibly, the player would need either keep the direction they were going mentally, or write it down on a piece of paper. These were the dungeon games on PC games. Of course there were the typical memory games: flip a card over, try to find two cards to match them, rinse repeat until you win. There are more subtle ways that memory play a part. In the game Resident Evil, there are keys that you have to collect. Once these keys are collected, you have to remember, while you were exploring the Mansion, which doors you need to open with which keys.