Guo Jia

Guo Jia was an officer and first strategist of Cao Cao. He gave good counsel to Cao Cao and was held in high regard. He died during Cao Cao's campaign against Yuan Shao from a heat stroke during their march through the inhospitable Northern deserts. After Cao Cao's defeat at the Battle of Chi Bi, he said afterwards, "If only Guo Jia was with us."

Dynasty Tactics
In Dynasty Tactics, he acts as Cao Cao's main adviser. Akin to the novel, he dies partway into the game. In one of the game's story scenarios, however, he commands Wei's army at Chi Bi and sees through Zhou Yu's fireship ploy. Boarding a burning ship, he rams into his enemy's front lines, killing himself and Zhou Yu in the process. With his sacrifice, Wei wins the naval battle.

He resumes a similar role in Dynasty Tactics 2 and often lives past his historical death.

Kessen
Guo Jia appears as an optional vassal for Wei in Kessen II. Xu Yun suggests for Cao Cao to hire him after hearing rumors of his talented scholarship. If he accepts, Guo Jia will serve as a powerful secondary general. He has an average War stat and a high Magic level. Though he will have few high-level spells, his magic is very powerful and a good support for war based generals.