Game Theory, Evolutionary Stable Strategies and the Evolution of Biological Interactions
The attached source provides commentary and explanation on how game theory and evolutionarily stable strategies are seen in nature. These behavioral trends can then be applied to numerous scenarios involving humans. 
With the above image, evolutionary stable strategies are illustrated between hawks (aggressive) and doves (cooperative). In this case, being a hawk is an evolutionarily stable strategy but only in the case that B > C > 0. B is the benefit of a resource while C is the cost of acting aggressively against another like-minded aggressive being (hawk in this case); however, this is contingent on the factors in the environment. The factors were set up in a way that the benefit of the shared resource was quantified as 4 and the cost of competitive behavior as 3. If the cost was much higher then doves would be evolutionarily stable.
While the models are analogous to game theory and the topics in class, it is interesting to note the attributes unique to the environment-specific model: complex interactions, and altruism.
For complex interactions, a mixed strategy could be related to avoiding larger animals and attacking smaller ones. The value or quality of the resource (benefit) will also influence strategies. Intense combat will not generally come about from a low-quality resource. Territorial animals will also behave differently depending on the location of the resource.
Altruism is also pertinent to the environmental model as there is a wide range of case in which altruistic strategies provides a rationale for being cooperative or in general, accepting a lower payoff. Examples of this are birds providing warning calls that may endanger them but will keep others safe and will encourage others to do so in the future. Another example is vampire bats regurgitating food to feed hungrier bats, also because they too may have the favor returned in the future.
In class, we have only started discussing evolutionary game theory, but the simpler concepts from wildlife in this article are both interesting and informative when evaluating competitive and cooperative behaviors in the real world, and their implications.
Source: https://www.nature.com/scitable/knowledge/library/game-theory-evolutionary-stable-strategies-and-the-25953132