StackAn

Block towers climb toward the ceiling in StackAn, a 3D Tetris puzzle that sticks to the classic rule set of four-cell pieces and disappearing rows. Many players already know the old version by heart. Here, depth changes the look of the stack, and a full line vanishes the moment the last space is filled. Points are tied to each level, and the required score has to be reached before moving ahead. Higher levels speed up the drop. A pile touching the ceiling ends the attempt and sends the current level back to the beginning.

How to play?

Guide each block shape into the stack before the space closes up. Arrow keys rotate the piece, helping odd layouts fit into tight spots. Falling speed rises later on. Read the surface early, then place the next shape before the column hits the top.