Tap anywhere to drop the slab - space works too. Land it dead centre and you keep the full width, and a run of those is worth far more than a tall wobbly tower.
About Stack Tower
Free one-tap block stacking game with isometric 3D slabs, a colour-shifting sky, perfect-drop streaks and three difficulty settings.
This is the purest one-button game there is: the only decision is when, and the only skill is judging a moving thing against a still one. What makes it hold up is that your mistakes are permanent - a sloppy drop narrows the tower for every drop that follows, so a careless first minute caps how far you can ever get. It is drawn as an isometric solid rather than as flat rectangles: each slab is a top face and two sides, shaded from a single light source, which is what makes a handful of polygons read as a real object. The sky shifts round the colour wheel as you climb, so a tall tower genuinely looks like it is somewhere else.
Frequently asked questions
How do I get a perfect drop?＋
Land the slab within a whisker of centre and it snaps into place at full width. Anything less and you lose the overhang for good.
Why is my tower getting so thin?＋
Because it keeps whatever the last two slabs shared. Every overhang narrows it permanently - there is no way to widen it again.
Is height or accuracy worth more?＋
Accuracy, by a long way. A run of perfect drops scores more with each one, while an ordinary drop is worth a single point.
Is it too hard for a young child?＋
Set it to Easy, which slides the slab slowly, or leave it on the age setting from Kids Corner and it picks for you.
Does it work on a phone?＋
Yes - tap anywhere on the play area. There is nothing to aim at, only when to tap.