Which of the following types of law could be described as the rules of the game in criminal cases

"Procedural law" could be described as the "rules of the game" in criminal cases.

Explanation:

The laws are designed to assure that judicial process in the U. S. or equal justice in other common law countries is applied fairly and uniformly to all cases brought before a trial. This law refers to procedures which bring and continue a lawsuit or other legal action.

In some jurisdictions known as remedial or rules of court or adjective or procedural law, contains the laws by which a court listens and decides what occurs in civil, litigation, criminal or administrative proceedings.