We missed the instructions for the game but the idea is that you go through 5 days, solving puzzles in each day and sometimes bringing some boxes into other days to solve the ultimate puzzle (opening the gate that is closed on all days), by leaving useful items you find in each day in the blue area near the cabin so that they follow you into other days. The cabin door is used to swap days too. It definitely could be clearer though. Also some bugs snuck in along with some level set dressing which makes things look a bit incomplete.