In video games( and movies) there is something called "credibility" which is not the same as realism.
Many of the things you do in a video game have to be believable.It should be logical, not absurd or exaggerated. The game is an abstraction of reality.
Imagine an RTS where you add physiological needs; it would be realistic but not logical or believable.
---Clear Definitions---
Realism: Attempts to replicate reality as faithfully as possible (physics, human behavior, visual appearance, logical consequences, etc.).
Credibility (or plausibility/verisimilitude): Makes the audience believe in the world even if it is impossible. It is based on internal consistency, consistent rules, and emotional/narrative logic within the created universe.
Realism seeks external precision. Credibility seeks convincing suspension of disbelief.