SIEGE BREAK

Find the weak point.

Free browser beta · 12 fortresses · 24 trials · Version 0.1.0-beta.2

Bring down a voxel castle before you run out of shots. Break a support, burn a wooden gallery or send a bomb into the wall. Fallen masonry stays breakable, so each collapse changes what you can hit next.

Choose your engine and round

Start with a catapult and unlock the ballista, trebuchet and royal bombard as you clear the campaign. The arsenal shows each engine and its ammunition. Stone, bombs, scatter, fire and thermite suit different targets; later engines add bolts, cluster rounds and a heavy cannonball.

After four campaign victories, you can call a meteor once per siege. Using it limits that attempt to one star and preserves any better score. Meteors are unavailable in trials.

12 fortresses, then 24 trials

Clear the campaign across three acts. Each victory opens two trials at that fortress: Economy limits your arsenal; Precision asks you to damage a marked target while protecting a nearby structure.

How to play

Click Run game. Use a desktop browser with WebGL2, a mouse and a keyboard. The beta is in English; touch controls are not supported.

• W / S: raise / lower your aim. A / D: aim left / right.
• Space or Fire: shoot. Select your round beside Fire; open Arsenal to change engines.
• Drag: rotate the camera. Scroll: zoom. C: reset the camera.
• Up / Down: increase / decrease shot power. Left / Right: lower / raise the firing angle.
• Esc: pause or close a menu. R: restart. M: toggle sound. H: hide the interface.
• Meteor: select the strike, move its target with WASD and press Space to confirm. Esc cancels.

Reach the destruction target before your rounds run out. Precision trials use the marked objectives instead. The aiming arc is an estimate; shots have a little spread.

Sound and settings

Settings → Audio has separate volume controls for music, effects and fire. Preview your selected engine without spending a shot. If large collapses slow down, set Effect quality to Low.

Your progress

Your career saves in this browser and carries over from Beta 1. Use Settings → Progress & saves to export a copy or import it on another device. Saves do not sync through your itch.io account or between game sites. Private browsing may not retain them. An unfinished siege restarts when you reload.

Feedback

Found a bug or a fortress that feels wrong? Tell me the level and what happened in Bugs & feedback. You can also open the forum from the game's help screens.

About KO RELAY

I'm Pavlo Kotenko, the creator of KO RELAY. I share game updates here and development notes on X.

Every chapter, trial and weapon is free. If you'd like to help fund the next update, you can leave an optional donation.

In development. Made with AI assistance in code, text and promotional design. Screenshots show the game. Music and sound recordings are used under CC0; author credits are in Settings → Audio.