Hiya,
I think I'm the only one currently planning anything new to be implemented. I'm not sure where the others have gone, or if there's a big revelation any time soon. Perhaps, there was definitely a prototype under development by Loaf & the gang with a preliminary web interface up. If the development is still active, I've been dropped out of the loop though, so I wouldn't know.
As for me, I implemented a basic grid-based world in Java that was saved in a SQL database that could've worked as a back-end for a game inspired by CK. Why I say "inspired by CK" is that I'd like to make a game with some similarities, but it's definitely not going to be "CK v2"
per se this project is publicly on GitHub, but I'm thinking of retiring it as a dead end.
Since I developed my prototype, I realized that it's basically a very basic tile-based engine for a block world that doesn't really add much worth on top of all the other engines out there. In fact, it was probably much worse than some back-ends that I could've adopted straight out-of-the-box.
Since then I've been revamping my ideas of development; instead of going for such back-end for the game (based on e.g. SQL database or local copy of game state), I've been playing around with the ideas of developing a blockchain that could support such a game. Naturally a blockchain-emergent implementation comes with the pros and cons of a blockchain's inherent properties. The game would be fully functional based on a blockchain, which would make it unique. Storing data / (data) transactions on blockchain of course imposes severe limitations on what game functionality could be implemented, so I'm approaching it in small steps. I've been sketching out a "white paper" of my ideas, though I don't want to put a date on it. It's on Overleaf as a LaTeX document if anybody's curious, but it's really crude though.
Doing something similar to CK is a massive undertaking, and I'm doing it in my spare time on top of my post-doc / family life. I'd greatly appreciate if there would be volunteering enthusiastic individuals out there willing to contribute to such an open source crypto-related initiative, as this would increase the chances of success drastically. So feel free to poke me over a private message and/or IRC (Syksy @ freenode), and I can also give you my personal email.
Naturally I'd love to see others activate, even if they don't want to contribute to my particular approach on this. I'm already grateful to certain individuals, who have been kind enough to share their insight into such a project. I can't make promises as this project cannot take main priority in my life, but it's definitely something that I think is very interesting and worth pursuing in my spare time.
Nice to see old familiar faces around
feel free to chat me up on IRC, though I might respond with a delay. I also have a Discord channel up for my various projects. I am anyway pursuing my hobbies as a game dev (just implemented an "Oregon Trail in Space" in Global Game Jam '19 a week ago, was refreshing to get to implement a whole albeit small game).