In Hinterland Studio's first game, The Long Dark, players attempt to survive while stranded in the cold, harsh wilderness. Survival means not only ensuring you have enough calories stored to survive the day's grueling activity schedule, but also defending yourself from lurking predators.
Running as opposed to walking will tire you out and deplete those precious calories more quickly. Hunger, fatigue, temperature, health and thirst also affect the survival simulation and bring you closer to death.
The Long Dark currently seeking funds through Kickstarter in its early stages of development. The Kickstarter campaign has a little over a week left and is about $80,000 CAD away from meeting its funding goal.