Since you have finished the movie, I'll post something that I really like: An image that Kazuki Takahashi (who wrote the YGO manga) posted on his Instagram some time after it released:
The caption was that 4 years after graduation, Yugi wins a contest to create a game, and becomes a game creator himself! It's called Spherium.
He did add that it's "just a possible future", but it's still pretty neat in my opinion
They are playing Yuugi's game in the KC Space Station!! Kaiba got his hands on the prototype and wanted to make sure that none of the competition knows anything about it. Or maybe they wanted a good view of the stars. Who knows.
Do you think Kaiba set up a custom board for Yuugi's game in his space station. Since its holographic, there must be some custom setup involved
is the game called Spherium because it is the shape of a sphere? very on the nose
The game itself is also connected to Duel Monsters! And outside the space station we can see Blue Eyes White Dragon and Dark Magician!! Yuugi's pieces are pink and Kaiba's are blue just like the colours of the Duel Disk in dsod
Yuugi has a confident smile while Kaiba has a look of intense concentration. Even Mokuba is joining them online!!
Yuugi became a game designer!! And he is working in Kaiba Corp!! In my heart this is 100% canon