The mutant lovechild of Dwarf Fortress (for it's awesome complexity) and Minecraft (for it's playablity and blocky graphics) would probably be my favourite game in the world, so I"m keeping an eye on developing DF spinoffs.
ATM I am keeping an eye on these two:
Towns is a bit simplistic at the moment, but I've played it a few times and it's a good distraction. Gnomoria I'm yet to play.
Anyone else have any suggestions for mining/building type games that are worth keeping an eye on?
Also on the side I am writing a sci-fi story which also describes a multiplayer Minecraft mod that I'd love to play (actually, it's a little complex for a mod - I'm kinda thinking of it as the next 'flavour' of Minecraft after vanilla). It's interesting coming up with new mobs and coming up with more challenges for multiplayer. I'll post the first few chapters when they are polished