First impression: this is really polished!
I like the intro story, even though I may not really understand fully what's going on.
I like how the tutorial, or rather the controls, are always visible on the corner of the screen. It's really nice and tidy.
The gameplay is intuitive, though I didn't expect the bomb to actually launch the boxes instead of destroying them.
My only little complaint is sometimes the "grid" is hard to see. It's not visible, but sometimes I feel like I'm not where I think I am (example: I thought the bomb that I placed are right next to the box, but turns out it's one space apart). Maybe add a little setting to show a grid.
The chain reaction theme only starts to appear at later levels, which is not bad. I think if it were introduced at the start, it would be too complex. The difficulty progression here is really nice, though maybe a little bit too easy. Maybe it's just me.
Speaking of chain reaction, level 11 is really nice and satisfying to look at.
For the art and aesthetic, the game looks very nice. It's simple yet clean