Hi! Thanks for the feedback!
I was thinking about it. But the game now is perfectly balanced - it's not too hard, not too easy. Once you get used to it, you can score 1000-2000 points or more.
If I add the possibility to shoot shapes downwards, it will make the game 2 times easier, game sessions will become practically endless.
Besides, it'll make the gameplay more complicated.
BWT, new update is coming out, where you can buy (for a very reasonable price
) 2 more grid sizes: 6x6 and 12x12.
6x6 is really fun and challenging, while 12x12 is more like a "zen" grid, you can play on it for hours.