Sorry, the saving feature is not done yet.
is it still in dev?
Yes. Implementing persistence is a difficult task. Although I have made an initial solution, I want to rewrite it before the game release. Naively saving all the destroyed blocks and their coordinates to the JSON file does not scale well.
is there a finish date or is it too early in the dev stage?
It is a bit early. But I want to start with closed alphas/betas soon.
