Stackbound

Stackbound is a physics-driven strategy game about building towers, where each block placement affects stability. You adapt your construction strategy to the challenge each round brings, aiming to keep your structures standing and earn coins.

Building and physics

You place and rotate blocks using grid snapping, with realistic physics determining how each placement affects the tower. Block types include wood, stone and ice, each with different properties. Environmental challenges include wind, reduced gravity and slippery surfaces, while some rounds bring time pressure, giant blocks or gravity chaos.

Cards and challenges

At the start of each round, you spin the Difficulty Wheel to determine its challenge. You choose cards to suit the modifier and your building strategy. The game has over 25 cards in three groups:

• Modifier Cards: blue cards that provide round-long enhancements, such as Sticky Base and Wind Shield.
• Sabotage Cards: red cards that add high-risk challenges in return for bonus coins; these can multiply your earnings.
• Utility Cards: green cards that provide tools such as Undo, Stabilize and Time Freeze.

You can also use emergency tools such as Emergency Stabilize to save a collapsing tower. Rush Mode gives you less time to think in exchange for bonus rewards.

Campaign and progression

Campaign Mode takes you through increasingly challenging rounds. Successful builds and risky plays earn coins, which you can use to expand your deck in the Card Shop with increasingly powerful cards. Some successful towers carry over between rounds, and achievements are available across seven categories, including Builder, Perfectionist and Speedster.

Visual progression

As you progress, you travel through 10 backgrounds, from city ground to deep space.