The way players interact with a particular computer game. It is further characterized as the way the game is played, including the rules, the plot, the objectives and how to conquer them, as well as a player's overall experience.

A suite of visual development tools and reusable software components designed to support the creation and development of computer games. The core functionality provided by a game engine typically includes a rendering engine for 2D/3D graphics, a physics engine (collision detection), sound, animation, artificial intelligence and networking.

The use of computer and non-computer games, such as card and board games, to deliver, support, and enhance teaching, learning, assessment, and evaluation.

The natural environment where an organism or population of organisms live. However it may also refer to the natural environment and the organism populations (community) that live in it. In this sense it is almost the same as the term biotope. The marine coastal habitat, the forest, the mountain and the prairie, are examples of habitats.

the use of statistics to assess whether sample data is consistent to a given hypothesis.

The usual process of hypothesis testing consists of the following steps:

Formulate the null hypotheses (H0) and the alternative hypothesis (H1)

Identify a statistical test that can be used to assess the truth of the null hypothesis

Compute the probability value that means the chance of the null hypothesis being true. The smaller the probability (p-value) is, the stronger the evidence against the null hypothesis.

Compare the p-value to an acceptable significance value (a value). If p ≤ a, the null hypothesis is rejected and the alternative hypothesis is accepted. 

Is the central tendency of a sample of values, taken as the sum of the values divided by the size of the sample, i.e., the number of observations.

The numerical value separating the higher half of a data set from the lower half.

A genre of RPG games in which a very large number of players interact with one another within a virtual world.

A frequently used and usually more practical, random sampling method. It is particularly useful in situations for which no list of the elements within a population is available and therefore cannot be selected directly. As this form of sampling is conducted by randomly selecting subgroups of the population, possibly in several stages, it should produce results equivalent to a simple random sampling strategy.

Quantification of the similarity of niches and, in particular, of the similarity in the use of resource type. The resources involved can be food, but also, for instance, may be aspects of the habitat.