'game rules' is correct and usable in written English.
You can use it when you are discussing the rules of a game. Example: All players must agree to follow the game rules before beginning a match.
"That's why we all value democratic game rules.
"What I don't generally accept is the D.O.E.'s definition of the game rules," he said.
Professional sports associations often adjust game rules to help balance offense and defense.
A similar fight is going on over "skin in the game" rules for mortgage risk retention.
There were no reports of unsafe play or of fair game rules not being observed".
In teams, students design, develop, and thoroughly test their original games to understand the interaction and evolution of game rules.
The skin-in-the-game rules, plus additional disclosure being mandated by regulators, should help.
Similar caveats also apply to the end-game rules which are adopted for chess and checkers.
The game will offer Kershaw the opportunity to pitch under baseball's new pace-of-game rules.
The American people are foolishly playing by your blame-game rules.
