If you're familiar with Richard Bachman's "The Long Walk" it's pretty much that. Like the book your also given a protein energy paste along with a canteen of water both supplied to you every 5 hours. Once the walk starts you can't stop or slow below 3mph. You must eat while walking, and stopping to relive yourself gives you 3 warnings before being shot.
The island is about as large as the virgin islands with a similar environment, and the outside is regularly patrolled by armed gun boats and bomber drones. The island only has 6 people (including yourself) since you are the first to be dropped off, but will receive more people in the coming months.
Assume all are the same age as you (if not in their 20's if you are younger). Also assume they have no prior cronic or mental conditions. Judge solely on what they do at their job.
You're not told an exact location, so it could be rocky, filled with dangerous animals (or dangerous people), could be tall canyons full of caves or flat and baren. One thing is certain that it's hot and water is scarce.
You'll be given fairly large backpacks with a 15x10 ft tarp and poles, 10 gallons of water, as well as some MRE meals. Of course you can drop some of the gear early or as you go to lighten your load.
You can't be there for temporary short amount of time, it's a one way trip. You'll be there until end of neverland hundreds of years into the future or until you accept death in some form.
You would be chemically argumented and castrated. You never see your family again as you would be replaced by a clone that would die shortly after. You would be trained along side 100 others but only 30 or so would survive the training and argumentation.
Yes this is a WYR be Master Chief from the halo series or live your life normally.
It can be either your choice of physical discs or digital copies, but the license remains the same on both (essentially turning your physical disc into a coaster).