Days are for "meditative" exploration and resource gathering; nights are for adrenaline-fueled tower defense against waves of aggressive aliens.
While Build 863 is not the absolute final patch (followed closely by Build 864), it is part of the v1.11 maintenance phase. Download Dig or Die v1.11 Build 863
Every structure is subject to a complex physics and water cycle simulation. Improperly supported buildings will collapse, and heavy rains can flood your underground base. Download Dig or Die v1.11 Build 863