Situated in Tokyo’s Akihabara district, the shop was launched to commemorate the 35th anniversary of the code first being used in the 1986 game 'Gradius'.
By entering up, up, down, down, left, right, left, right, B, A, players could unlock a more powerful ship to play as, and the hidden cheat code went on to be used in 'Gradius II' and other Konami titles.
The pop-up shop sells various exclusive items based on classic Konami titles such as 'Gradius', 'Goemon', 'Snatcher' (notable for being directed by a young Hideo Kojima) and 'Tokimeki Memorial'.
Konami also marked the anniversary of the cheat code by commissioning a musician to write a song about the cheat code, but our Japanese is a bit rusty.
The pop-up shop runs until November 16th, so if any of our readers are able to get to Tokyo in time, be sure to grab some merchandise!
For those who want to partake in virtual window shopping, the collection of items are available to look at here.
