Stackapult

Build your ammo, then bring the castle down!

In Stackapult, each shot starts as a stacking challenge. Slabs slide back and forth over your tower, and you tap to drop them. Anything hanging over the edge gets sliced off, so the more precise your tower, the bigger the boulder you launch from your catapult.

Set your angle and power, fire, and watch the castle walls fall. The enemy shoots back, though. Their ballistas fire at your catapult, your guards and your slab pile, so every turn counts. Land PERFECT drops to build combos and grow bigger projectiles, knock out the king, and save slabs to earn all three stars.

This is the full game: all 36 castles across 3 biomes, playable right in your browser.

What’s inside:

36 castles to smash, 3x more than the free demo
Forest: learn the ropes and master your stacking
Snow: frozen ice palaces in a blizzard. Headwinds and tailwinds push your shots off course, so every shot needs a new aim.
Volcano: fortresses packed with dynamite. Hit one TNT crate and watch the chain reaction bring the whole castle down.
Rising difficulty: each biome is harder than the last, with tougher castles, sharper enemy ballistas and new challenges to master
Full Workshop progression: spend gold on permanent upgrades all the way to the max: wider slabs, steadier hands, longer aiming lines, a stronger catapult, shields and more
Star ratings, combos and high scores to chase on every level
Controls:

Tap or click to drop a slab
Set angle and power, then press FIRE to launch