Sankokushi is a Japanese arcade game, likely another entry in the Sangokushi series based on Romance of the Three Kingdoms. The gameplay probably involves tactical combat and kingdom management. While the specifics are unknown without more information, the graphical issues mentioned suggest a potential problem with the arcade cabinet's hardware or a version-specific bug.

Sankokushi (Japan)

Sangokushi II: Sheng Jian Sanguo (Chinese version set 3, 921005 Asia)