Build your defenses and hold the line in Lock's Quest for the Nintendo DS. In this innovative strategy RPG hybrid, you play as Lock, a young Archineer who must design and build fortifications to protect his kingdom from the invading Clockwork Army. The gameplay is divided into two distinct phases: a "Build" phase where you strategically place walls, turrets, and traps on a grid, and a "Battle" phase where you actively repair defenses and fight enemies in real-time using the stylus. With a gripping story involving the villainous Lord Agony and unique construction-based combat mechanics, you are the last line of defense against the mechanical horde.