Boundary Gate: Daughter Of Kingdom is an old-fashioned RPG with dungeon-like 3D layout. The game is viewed from first-person perspective, with the exception of battles, where the heroes can be seen from an "over-the-shoulder" view. The attacks are animated. Enemies are random, and combat is turn-based, the party members using equipped weapons to attack or magical spells. Important locations are presented as 2D pictures. There is also voice acting for important conversations.