Surely you can see it? I know I can. Those windows look like DS game cards.
Twitter user Yorunotobari spotted a shopping mall in Chiba, Japan with windows that look like Nintendo DS games.
— よるのとばり (@ho_ni_man) May 15, 2017
Inside the windows are advertisements for the building's shops. They really look like DS cards.
In case you forgot what those look like:
— 絶命くん.mp4 (@Zetsumei_kun) May 15, 2017
And compared to the shopping mall's windows:
— genesis[狂][歌]チームGOF (@Genesiser1127) May 16, 2017
— 醤油はネモノア欲しい (@kuro_ss297) May 16, 2017