Phytrix: a Tetris-Meets-Match-3 Time Waster
That's not all, though. Each level of Phytrix has its own rules. For example, maybe you need to clear 40 blocks without removing any purple triangles. This sounds insidiously challenging, but Phytrix doesn't punish you very harshly for breaking the rules. Instead of losing the game when you make the wrong piece disappear, you just get a row filled in at the bottom of your screen, pushing your pile of pieces upward toward certain doom.
It's like Tetris, except that those filler rows aren't permanent. You can remove them by clearing more of the right pieces. As a result of this leniency, Phytrix doesn't get tough until several levels in. It's a neat idea for a game, and it's fun to play for a while, but it could offer more of a challenge.