Sandtrix is a puzzle game that mixes Tetris with the physics of sand. The player drops and manages falling sand particles to compensate for rows that are continuously cleared to avoid piling up the screen. The nature of the sand is pretty unpredictable, making things a bit more problematic compared to classic games. As the level advances, particles fall much more rapidly, which makes space management much harder. Success comes through quick reflexes and a good dose of strategy; the player must not let the game get away from him/her.