How far along is it? I tried it for an hour a while ago and the interface was full of 'feature not yet implemented' tags. The tech tree, for example, only had a tiny amount of the planned options implemented, which made me feel like I didn't actually have a choice when picking.
I'm eager to try it again sometime when it feels closer to a finished game. 

 This was in May.
Afaik several of the WIP features have been implemented since then. Not sure about the tech tree but several of the building and crafting mechanics for artesianas have been updated since then.