Kevin, Rajiv, and Yakov are hunters who live next to a recreational wildlife game area that is open to hunting; in other words, anyone is free to use the recreational wildlife game area for hunting. Assume that these men are the only three hunters who hunt in this recreational wildlife game area and that the recreational wildlife game area is large enough for all three hunters to hunt intensively at the same time.

Each year, the hunters choose independently how often to hunt; specifically, they choose whether to hunt intensively (that is, to set several traps and hunt long hours, which hurts the sustainability of the recreational wildlife game area if enough people do it) or to hunt nonintensively (which does not hurt the sustainability of the recreational wildlife game area). None of them has the ability to control how much the others hunt, and each hunter cares only about his own profitability and not the state of the recreational wildlife game area.

Assume that as long as no more than one hunter hunts intensively, there are enough animals to restock the recreational wildlife game area. However, if two or more hunt intensively, the recreational wildlife game area will become useless in the future. Of course, hunting intensively earns a hunter more money and greater profit because he can sell more animals.

The recreational wildlife game area is an example of ___ because the animals in the recreational wildlife game area are and _.

Common resource is defined as the resource that is usually available to people in open form and people tend to overuse it.This creates shortage of resource and brings scarcity.They are considered rival in nature.
Any good is considered rival if consumption of good by one person reduces consumption of that good for another person. It is regarded as subtractable.
Non-excludable good is defined as the good that does not stop other people or group of people to consume or use it.There is no certain restriction of using particular good.

According to the questions scenario, recreational wildlife game area is common resource because Yakov, Rajiv and Kevin are using that area for hunting openly .Other hunters can also use the area for hunting as it is available commonly for everyone as per their needs.

Animal of wildlife game area can be considered rival and non-excludable in consumption because they are openly available for hunter and there is no restriction on their usage (hunting) particularly.Thus, if a hunter hunts more number of animals using intensive hunting mechanism, it will reduce number of animals for other hunters .