Showtime to FX: two can play that game.

Premium cable network Showtime announced Thursday it had changed the name of its cancer comedy “The Big C” for its final four-episode mop-up.

Laura Linney as Cathy in “The Big C.” (David M. Russell/Showtime)

“Limited series,” BTW, is what the TV academy used to call those TV project we now call “miniseries” at its Emmy Awards.

Showtime is also adding new character to the show, for all four episodes, furthering distinguishing it from the three-season series.

Kathy Najimy will play a no-nonsense therapist, to star Laura Linney’s Cathy Jamison character — a suburban wife, mother and teacher whose cancer diagnosis shakes up her life.

Should Showtime declare the final batch of “C” episodes a miniseries, it will be taking a page from the playbook of the “American Horror Story” network FX and show creator Ryan Murphy.

“American Horror Story” copped 17 Emmy nominations last summer, by not competing as a drama against “Mad Men.” After competing in the drama-series races at the Golden Globe Awards and the Screen Actors Guild Awards a few months ago, the decision makers behind “American Horror Story” decided the show is a miniseries going forward.

According to the TV academy, its Primetime Awards Committee decided that a program is considered a miniseries if the season is “based on a single theme or story line, which is resolved within the piece” and a drama series of it has an “ongoing theme, storyline and main characters” that are “presented under the same title” and have “continuity of production supervision.”

Laura Linney as Cathy and Michael Ray Escamilla as Angel in “The Big C.” (David M. Russell/Showtime)