Castle Busters: Best Bomb Thrower and Cannon Strategies

To maximize destruction efficiency in Castle Busters, pair the Bomb Thrower and Cannon in your squad. Spreading fire randomly across an entire castle risks running out of shots before reaching the destruction threshold. Combining high-arc splash attacks with direct base penetration allows you to destabilize structural foundations and dismantle enemy keep layouts quickly.

Unit Roles and Target Materials

Matching each unit to its complementary material type and target zone prevents wasted ammunition and maximizes structural collapse.

Bomb Thrower Tactics

The Bomb Thrower lobs projectiles over direct obstacles to strike upper structural layers. Aiming for the upper-middle section of tall or vertical castles destabilizes the top blocks. As these high blocks collapse, falling debris damages lower-level sections, achieving higher destruction percentages without spending extra shots.

Cannon Tactics

The Cannon provides direct, high-velocity strikes aimed at solid surfaces. Use direct shots to breach outer stone walls, punch through exposed support beams, or destroy the base foundation once outer layers are cleared.

Deployment Sequence for Siege Operations

Follow this step-by-step firing order to collapse enemy fortifications efficiently:

1. Scan the Geometry: Observe the opponent's keep structure before launching. Look for structural weak points such as thin support columns, overhangs, or sections supported by single blocks.
2. Loosen Upper Layers: Launch two to three Bomb Thrower volleys at the upper wooden or complex assemblies to clear top decorative layers and weaken the upper frame.
3. Target Exposed Base Beams: Once the tower leans or shifts, switch to the Cannon and fire directly into the exposed stone support beams at the base.
4. Finish Weakened Nodes: Focus remaining shots on hanging or unstable blocks to trigger complete collapse rather than spreading damage across intact walls.

Unit Upgrade Priority

Focus your accumulated gold on upgrading the Bomb Thrower and Cannon before investing heavily in secondary units. Higher-tier arenas feature reinforced walls with increased density and health. Upgrading these two primary units scales their direct damage output and splash radius, ensuring your projectiles break through tough enemy structures in higher-stakes PvP matches. If your shots consistently fail to break structural blocks, pause progress to upgrade your Bomb Thrower and Cannon levels in the menu.