Demo install ok with offline installer (never used Galaxy so far) on windows 10 Detaching your head, filling it with gases that gives you abilities and interacting with creatures seems promising in terms of puzzles. Difficulty seems fair. Main character animation is quite good. Stress due to almost permanent deflating head countdown may be oppressive on the long term if, like me, you like to take your time and prefer to avoid death, yet the chekpoint mechanic is consistent with this constraint. What may be improved: - controls seems sometimes rigid, for example when trying to jump in the opposite direction you were running - progress may be too linear (but maybe it's only a feeling from first half-hour of gameplay) - no control customization (qwerty keyboard only, no mapping) - map is not centered on character What look likes bugs : - when an advice is displayed, Esc sometimes shows the maps instead of closing the advice - when jumping close to the gas tank above first water area (head not retrieved yet), I was "teleported" to another screen - detached head being held by a creature turns invisible in next animation (screen up left from tank above first water area)