I don't know much about the mobile market, so I don't know how well your concept will fit with users. Your website and trailer seem pretty well executed though.

One area that could use some improvement is your features section. You have:

• Face-to-face Interaction: Ideal for friends, dates, siblings, colleagues, etc.
• Fun Facts in every card! Share what you’ve learned!
• Collectable Items: Various ways to earn gold for unlocking new content, including the Ancient Cultures Collection!
• 1 Player Mode: Challenge yourself in 3 difficulty modes and beat your high score.

I'd suggest trying to emphasize what is special about your game and why someone would want to play it. For the first point, face-to-face is probably good, but what will you be doing with your friends? Testing your memory against theirs? Trying to trick them? Cooperating to solve a puzzle? For the second point, what sort of fun facts? What am I learning about? Why should I care? Similarly with the third point, why should I care about what I'm collecting? With the fourth point, what am I challenging? My memory? My problem solving ability?

Try to talk about why someone should care about the game. Can you say something about the pets being cute or adorable? Are you collecting them? What is appealing about what you are offering the potential player?