> It feels like the bottleneck has completely shifted from "how do I implement this" to "what assets do I need".

Frankly, and I don’t wish to be mean or discouraging, but this is neither good nor interesting. The screens are generic, the gameplay isn’t fun or funny or well thought out, and it’s not very responsive either. It’s also not a Space Invaders clone, enemies don’t just infinitely fall down randomly and overlapping in that game.

That it took thirty minutes to make isn’t impressive, because that’s how long it looks like it would take to build by hand anyway. There’s no reason for this to be a React app with Tailwind.