The project is being made on top of SDL and WebGPU, without a popular engine like Unity or Unreal Engine.
We have been keeping an eye on Ottosson's project for quite some time, just as we did with Tiny Glade. Hopefully, this builder will be as successful when it gets released. Unfortunately, there is no name or Steam page for you to wishlist it yet, but the creator is working on it, so stay tuned and follow him on X/Twitter.