See also Proland, which is open source: http://proland.imag.fr/ http://proland.imag.fr/ It's a tech demo/research project, which means the code is basically c

See also Proland, which is open source: http://proland.imag.fr/ http://proland.imag.fr/ It's a tech demo/research project, which means the code is basically continuously broken, but I did bodge it into workingness on Linux. It's impressive but doesn't quite live up to the videos --- I think they're using features that weren't working in my copy. But it is one that you can actually get your hands on and play with. Proland is by the same person who did the wonderful Rama animation here, using some of the same procedural generation technology: https://www.youtube.com/watch?v=zBIQCm54dfY https://www.youtube.com/watch?v=zBIQCm54dfY Although Rama wasn't rednered in realtime.