Build higher. Transform smarter. Hold the line.
BoltStack is a fast and satisfying tower-defense game where every brick makes your fortress stronger. Stack defensive blocks, activate powerful machines, and survive increasingly dangerous waves of monsters.
BUILD YOUR DEFENSE
Place and reinforce bricks to create a powerful defensive structure. Every block matters, so build carefully and prepare for the next attack.
TRANSFORM BRICKS INTO MACHINES
Discover special technology blocks that transform into lasers, saws, explosives, combat vehicles, and other powerful tools.
SURVIVE MONSTER WAVES
Face enemies that become stronger with every stage. Choose the right upgrades and adapt your strategy before your defenses collapse.
UPGRADE YOUR POWER
Improve your damage, health, weapons, and special abilities. Combine upgrades to create a build that matches your play style.
COLLECT EQUIPMENT
Unlock equipment, skill cards, vehicles, and new technology. Strengthen your hero and prepare for tougher battles.
EARN PATROL REWARDS
Collect resources from patrol missions and use them to continue upgrading your defense.
BoltStack combines tower defense, action, progression, and transforming machines in one colorful adventure.
How high can you build before the monsters break through?
Build. Transform. Defend.
Stack bricks, transform machines, and defend against waves of monsters!