The player takes the role of Verdite prince Lyle (ライル・ウォリシス・フォレスター) as he struggles to uncover the reasons behind his father Jean's sudden descent into madness and restore his kingdom.

As in previous King's Field series titles, Gameplay mostly involves first-person battles, puzzle solving and exploration.

[6] Reviews for King's Field III widely praised the massive size of the game world and the resulting longevity,[8][9][10] and criticized the slowness of the character movement and combat.

[8] A GamePro critic noted the improvements over King's Field II but judged that the slow, unbalanced combat remained a crippling flaw, remarking that "everything onscreen looks like it's moving underwater.

[11] Greg Kasavin of GameSpot also felt the improvements over King's Field II were insufficient, but primarily because they added up to more of a refinement of the original formula than a new direction.