Escape: Sierra Leone is an exploration-based first person survival/exploration game set during the Sierra Leone civil war. It is truly open and allows the player limitless freedom. No invisible walls, no set quests, and a dynamic story.
A quick video showing a basic, yet vital gameplay mechanic: drinking water from bottles and lakes (or other fresh water sources). Also, I demonstrate the ability to refill an empty bottle while drinking from a lake. Note that there are no sound effects for drinking yet, so it's a little unexciting. Also, you can watch the developer stat readouts on the top left of the screen to see updates on when the player loses food/sleep/water stats, and what his current food/water stats are sitting at.