It is purely browser but you can download the html and play as you want. I could probably wrap this with Tauri to have a desktop icon and all that.
Yep, the code is written with AI, and I'm upfront about that. But it's not "just prompt and ship." I direct all of it: researching the original map's layout and numbers, placing things, playing it, and sending it back until it feels right. I redid the look many times before it got here. The sounds, models, and art are sourced and credited by me too. AI is the tool, and the game is the result of a lot of my decisions and testing. Still not 100% happy with it, so it keeps improving.