Block Stack

Block Stack asks you to place moving slabs on the tower's current top. Click or touch when the active block aligns with the support underneath. Any overhanging strip is cut away, leaving a smaller surface for the next placement. Missing the support ends the attempt. The challenge is preserving overlap, rather than balancing loose objects in a leaning tower.

Protect the platform

Watch the top block's edges instead of concentrating on the tower's height. Movement alternates between axes, so check the new direction before each input. A neatly timed placement preserves more room; repeated small errors can shrink both dimensions and make later blocks much harder to place.

After an imperfect placement, aim at the surface that remains. You cannot recover a removed strip by targeting the original base. Observe whether the overhang fell on the near or far side and use that result to refine the next comparable input. Waiting for a clear approach is more useful than clicking urgently because the previous block lost width.

The Block Stack alignment guide explains axis changes, narrowing platforms and deliberate recovery. The block-stacker collection includes other block challenges; read their objectives because grid placement and line-clearing games follow different rules from this moving-slab tower.