Submachine 6, plus a nested digression on bats

Since the foul fiend Insomnia continues to maul me in its batrachian* paws and slobber down my neck, many thanks and a tip of the hat to kate_nepveu , who pointed out to me that there is a new Submachine installment: Submachine 6: The Edge .

N.b., the game will make marginally more sense if you have a passing acquaintance with the previous Submachine games. But only marginally. Nevertheless, for your point-and-click pleasure:
Submachine 1: the Basement
Submachine 2: the Lighthouse
Submachine 3...