This is absolutely superb. However there's a little bug where the Lady Frog sometimes gets left behind on the screen if you don't collect her, and floats around afterwards, including over the water, but can't be picked up.
301 days ago (+1)
Sorry, it's a bug on my part. The developers from 1981 simply poked into the sprite address to fix the bug. I couldn't assign this, but now.
In ROM starting at address $1F87, for anyone interested.