Oops. Was playing some Meeple Station, wound up making a MASSIVE mistake that went unnoticed until everything went critical and all my oxygen was completely depleted, with no hope of recovery (and believe me I tried.) And stupid me forgot to save since loading the game so all of today's progress is pretty much wasted. Ah well. At least now I know I need to pay careful attention to walling off anywhere with an airlock! All it takes is one missing wall to ruin everything