So I'm the creator of this game. So I have it like that because you unlock 52 cards every win. Right now there are over 300 images, and 150 videos. Do you have an idea how i can make that part better? Is it too harsh on how little new ones it shows?
I played around 30 games, mostly in medium so only managed to finish about 1/3 of them. The last 10 games it felt like I only saw 2-3 new images so at the current pace it would take hundreds if not thousands of clears to see everything.
I think it would be interesting if you made it so each long attempt (something like revealed at least 1/2 the cards) unlocks a new image, with each win unlocking a new animated image (2 for medium, 3/4 for hard to reward higher difficulty).
The next step could be an option in the gallery to disable a specific image from showing up, so we could eventually end up with a tailored deck with only animations we fancy.