The phrase "a game performance" is correct and usable in written English.
It can be used to refer to a specific performance or presentation related to a game, such as a theatrical performance based on a game or a live gaming event.
Example: "The audience was thrilled by the game performance, which showcased the skills of the top players in the tournament."
Alternatives: "a gaming performance" or "a performance in a game".
"That was a game performance and we're delighted".
At the time it seemed a game performance; in retrospect it strikes me as a triumph of the dramatic arts.
There will be no Triple Crown for a 33rd consecutive year, because of a game performance from the front-running colt, Shackleford.
Ms. O'Connell, who is lovely -- perhaps too lovely for the low-rent woman she's playing -- gives a game performance, and so does the rest of the cast.
Nicole Kidman gives a game performance as Katherine's competitive best friend, and it could have been hilarious, but for one thing.
At the center of the play Mr. Cochrane gives a game performance here; his verbal aptitude for Cyrano's eloquence is apparent (a Scot, he has the voice and accent for it) and shows himself capable of both the seriousness of Cyrano's torment and the glibness of a Seinfeld.
In a move that sees some local consolidation in the games marketing space, Crobo, the Berlin-based games performance marketing platform, is hoovering up its Hamburg neighbour TrafficCaptain, which runs a games performance — or affiliate — network.
But the questions that reporters tossed to Willingham yesterday rang as loudly as a bowl game performance by a marching band.
Over in Buenos Aires in the early hours of Sunday morning, St Helens middleweight Martin Murray came up short against Argentine hero Sergio Martinez, but it was a tremendously game performance by the Englishman.
I covered a flirtation of perfection by Zambrano last year, a gutty complete game performance that ended up as a 1-0 loss to San Diego.
Controlling for pretest score, gains in shifting were significantly predicted by a measure of game performance in the Alien Game.
