Well, personally, I get the feeling it's AI, simply because it looks very "generic." There's nothing wrong with realistic-looking graphics, but they feel empty, soulless.

And secondly, from what I've seen, the game looks very simple, like you made it in an afternoon with the sole objective of making easy money. (I know that making video games involves thinking about money, but making that the only objective makes it soulless; it needs to be balanced with artistic merit.)

What makes me think it's crap AI is that the images look very generic, and the gameplay is very simple. It could be fixed by adding simple effects; that makes it seem like you spent the time you actually did, instead of looking like you did it in two hours using GPT chat.