The main objective of Nerugame is to stay alive for as long as you can by deciding whether to sleep or to stay awake given the circumstances. Keep in mind that it’s a Japanese game so it’s bound to be a little twisted. I made it to level 12/day 34, and then I drowned to death. Fun! How long can you stay alive?
Update: My husband and I did the game together and made it to level 26/day 50 when we died in a battlefield. Heh.