Hummm....
So you've got a couple problems and a couple good things.
Good things first:
1. The art is nice. It sets the tone of the game well, and isn't too flashy or simplistic.
2. You have a fairly good concept. Mixing resource collection and upgrades with a block puzzle is fairly uncommon as far as i can tell, and you've made it feel fairly nice.
3. The music also sets the tone well, even if it's a little....bland...
OK, now some complaints.
1. The Upgrade interface feels off. Clicking the top of the ship to go to another page of upgrades feels extremely weird, especially when there's a "menu" button sitting right on top of it. In addition, there is no other place you can click the ship, making it feel out of place.
2. The control is a tad buggy. When you make these kinds of games you usually want the player to be able to move the stack left or right as many times as they want per step downward. being restricted to moving either left or right per vertical step is aggravating, and makes the game feel choppy, especially when the blocks are coming more quickly.
3. This is more a personal complaint because you may have intended this to be part of the difficulty of the game, but not being able to rotate the block stacks irritates me. Less because it makes the game more difficult, but more because it decreases the freedom I have as a player to solve problems, and therefore decreases the fun. for me.
All in all fairly decent!. Do an update and I'll be happy.