Despite other comments saying how this game is synonymous to Tetris, I beg to differ.
For a first, this game has limited controls - you can only do so much with moving your object (left/right). There's no rotating, removing or putting the falling object in some "Hold" box. So this pressures you to plan your placements more carefully and with caution.
If you misplace the object, or have created a gap between the structure then you'll have to make do with it.
This game seems all right imo. I really like how the game publishes a certain record once you've achieved a specific height (e.g Worlds tallest Christmas tree). It's pretty interesting stuff.