Tower Stack

About the Game

Tower Stack is an original stacking game with 50 handcrafted stages. A crane carries each block back and forth — or swings it on a cable — and you tap to drop it onto the tower. Line it up dead centre for a Perfect, chain Perfects into a combo, and keep the whole tower balanced: the game checks the centre of mass at every joint, so a heavy steel block landing on an overhang will pull the stack over. Each chapter adds a new challenge. Foundations covers slabs, beams, pillars and faster cranes; Weight & Balance brings three-tonne steel, light foam and the swinging crane; Wind & Motion adds gusting wind that pushes falling blocks and a base that slides back and forth; Special Blocks introduces glass that cracks under heavy or off-centre loads, slippery ice, glue that locks a joint in place and magnetic anchors that snap near misses straight; and Skyline ends with expert towers and the 30-block Grand Tower. Every stage is completed during development by a bot that tries every possible drop timing on the game's own physics, which also proves a fair timing window for every block.

How to Play

The block on the crane moves on its own; tap anywhere, or press Space or Enter, to drop it. It falls straight down — wind, shown by the arrow in the corner, can push it sideways on the way — and lands on the top of the tower if it overlaps it. Landing within a hair of the centre is a Perfect: the block snaps straight and your combo grows, up to ×5. A block that misses the tower falls away and uses up one of your spare blocks. After every landing the tower must balance: at each joint, the weight above has to sit over the part it rests on, otherwise the tower topples and the stage is lost. Heavy steel moves the balance point a lot, light foam hardly at all. Glass cracks if the load on it is too heavy or off-centre, blocks landing on ice skid further from where they hit, a block landing on green glue is fixed in place even if it overhangs, and magnetic anchors snap a near miss straight. Finish the sequence to complete the stage; Perfects, combos, spare blocks and height all add to your score, and higher scores earn up to three stars.

Controls

• Tap / ClickDrop the block
• Space / Enter / ↓Drop the block
• RRestart stage
• Esc / PPause

Features

• ✓50 handcrafted stages in five chapters
• ✓Deterministic balance physics with toppling and cracking glass
• ✓Steel, foam, glass, ice, glue and magnetic anchor blocks
• ✓Swinging cranes, gusting wind and moving bases
• ✓Perfect combos, spare blocks and up to three stars per stage
• ✓Plays with touch, mouse or keyboard

Gameplay Tips

• •Watch where the block sits over the tower, not where the crane is — the guide line shows the drop path.
• •On a swinging crane, the swing is slowest at its ends: aim so the block is over the tower just before it turns.
• •Never put a big overhang under steel — the weight will pull the tower over.
• •Drop slightly upwind: a long fall gives the wind more time to push.
• •Glass only forgives centred, light loads. Save your best drops for the blocks above it.

FAQ