Build and defend using a modular system of castle blocks. Fend off enemies who will climb over and break through your defenses. Collect new blocks and research techs to improve their strengths. From lowly soldiers to powerful siege weapons; defeat them all as you strive to protect your kingdom.
Players can construct their castles using a modular system of unique, interlocking blocks that can be stacked up to 5 tiles high. This allows them to take advantage of both height and adjacency effects, enabling the creation of intricate and effective defensive structures.
Enemies are determined to reach the player's keep and will adapt their paths in real-time, going around, climbing over, or breaking through walls and defenses to get there as quickly as possible. This forces players to constantly adapt their castle layout to counter the evolving enemy approach.
Projectiles are physically simulated, which can lead to them hitting unintended targets or missing entirely. This unpredictability requires players to carefully position and time their defensive structures to maximize their effectiveness.
As players progress, they can purchase new technologies that improve their defensive capabilities, such as slowing enemy climb speed, adding more defenders to the walls, or enhancing the power of projectiles. This tech tree system allows for gradual improvement of the castle's defenses over time.
The game offers several gameplay modes. The campaign presents a series of levels with increasing difficulty, where players must earn resources and unlock new blocks and technologies to succeed. The endless mode challenges players to see how long they can survive against an endless wave of enemies. The creative mode allows for free-form castle building and testing against custom-designed enemy waves.