The principle known as the ‘multimedia principle’ (Nine Ways to Reduce Cognitive Load in Multimedia Learning) states that ‘people learn more deeply from words and pictures than from words alone’ (Mayer). However, simply adding words to pictures is not an effective way to achieve multimedia learning. The goal is to instructional media in the light of how human mind works. This is the basis for Mayer’s cognitive theory of multimedia learning.
People can only process a finite amount of information in a channel at a time, and they make sense of incoming information by actively creating mental representations.
One concern should be that using video games as an educational medium may actually decrease learning in comparison to simply presenting the information in a straightforward manner using text and pictures.