Block Siege

Build a defense. Find a weakness. Take the shot.

Block Siege is a 3D physics strategy game that combines freeform building with hands-on cannon battles. Construct a fortress from different materials, position your cannons, then aim and fire. Your defenses must withstand the impact while your shots search for a way through.

Every material is a tactical choice

Build with bricks, rock, steel, jelly and triangular supports. Spend your construction budget, reinforce key positions and balance protection against clear firing angles. Build taller, add another layer, or conceal what matters most. Put your design to the test.

Aim, fire and watch the walls fall

Deploy multiple cannons, switch firing positions and adjust your direction and power. Colliding projectiles, tumbling blocks and collapsing structures make the results of each shot visible. Study the opposing layout and look for a vulnerable spot.

Two battlefields. Two ways to fight.

Crystal: protect your Crystal Heart and destroy your opponent's to win. Dam: hold back the flood and breach the opposing dam. Turn-based and Free modes: plan each alternating shot or trade fire as your cannons reload.

Find your own approach

Combine tools such as glue, oil and smoke, then challenge AI opponents with different difficulty levels and building styles. Visit the practice range to build and test your structures without an opponent or a win condition.

Build strong. Aim true.