The phrase "altered rules" is correct and usable in written English.
You can use it when referring to rules that have been changed or modified in some way.
Example: "Due to the recent changes in policy, we will be implementing altered rules for the upcoming competition."
Alternatives: "modified regulations" or "revised guidelines".
The blogs and medical journals are filled with potential solutions — new helmets and altered rules, none of them promising a perfect resolution, but many plausible.
Chinese regulators altered rules to encourage institutional short selling and banned trading on over the counter or non-exchange-listed securities using leverage.
On Friday, the administration altered rules for identifying which passengers flying to the United States should face extra scrutiny at the gate.
The Pentagon has pushed back against a perception in early 2017, when observer groups reported an apparent surge in civilian casualties, that it had altered rules guiding the U.S. air campaign.
The altered rules permit those lofts to be used as joint living-work quarters, provided that an occupant of each unit is certified as an artist by the city.
The opening session of Grandmother's footsteps is mirrored by another one at the close, with slightly altered rules: how would you care to play, for instance, if the hand reaching out toward you, at your back, did not belong to the living?
E.P.A. officials said on Wednesday that the altered rule would cost half as much as the previous proposal while achieving virtually the same health benefits.
According to the New York Times, "EPA officials said on Wednesday that the altered rule would cost half as much as the previous proposal while achieving virtually the same health benefits".
The lawsuit claims the men persuaded regional Little League officials to alter rules governing how the Cheshire chapter president is elected.
One is altering rules in the Nuclear Suppliers Group, a consortium of more than 40 countries that controls export of nuclear technology.
But commission officials said they would not alter rules that prevent the four majors -- ABC, CBS, Fox and NBC -- from acquiring one another.
