A very nice little game, actually!
I like the concept of indirectly giving resources to a Tower Defence system, and trying to create the needed resource yourself.
And the minigame for that, the sliding puzzle, I found very neat: it's different than the sliding blocks I usually expect, and I thought it felt nice to watch em slide across the screen.
Very relaxing to play really - you lose yourself in the blocks, check to have resources assigned... and just vibe, really. The colors, SFX and music really helps!
Awesome entry overall, I like it a lot!