> By closing the window do you mean closing the game?
Yes, complete close of the window. I haven't tried to reproduce the bug, but once I will try.
About exploration [spoiler]: I have found different species and the silver. Good. But most annoying were jellyfish (or something like that). Is it possible to destroy them? :/
And another strange thing spotted:
when I lost a game (eyes have eaten me), I have run again the game, and I have found that some of the resources were in my base. Probably from last save. Buildings were lost, but resources not. Is it a feature to start faster, or rather a bug (no reset for resources)?