Hyperbolic Non-Euclidean World (2007) (opens in new tab)

For everyone who wants to experience hyperbolic geometry, I recommend HyperRogue (https://roguetemple.com/z/hyper/).

I think the picture is still not complete without the imaginary axis. Would that axis be curved too?

What software was used to draw the pictures? Was it in visual basic 6? Looks pretty nice.