It's Tetris, but the arrangement of having the puzzle disappear when the colors are connected, rather than having a horizontal row fill up, was very unique and interesting. That and the behavior of the sand is fun to watch! The exquisite time limit of the combo system and the sound really enhance the feeling of playing. Also, unlike Tetris, you can't move the sand a little when it's on the ground, so it suddenly becomes more difficult when the falling speed gets faster.
It is Tetris, but the arrangement was very unique and interesting: instead of a horizontal row being filled, it disappears when the colors are connected. That and the behavior of the sand is fun to watch! The exquisite time limit of the combo system and the sound really enhance the feeling of playing. Also, unlike Tetris, you can't move the sand a little when it is on the ground, so it suddenly becomes more difficult when the falling speed becomes faster.