Not for nothing, but I did create an entire game in browser using phaser as the engine.

But I'm also an experienced developer and at this point, an experienced "vibe coder". I use that last term loosely because I have a structured set of rules I have AI follow.

To really understand AI's capability you have to have experienced it in a meaningful way with managed expectations. It's not going to nail what you want right away. This is also why I spend a lot of time up front to design my features before implementing.