Interesting take on Tetris.
Took me a moment to grasp the rules, but after playing easy mode, I got a good sense what each tile does and controlled the situation well. I would say, the most fun are the "pipes" tiles. I would consider adding different pipe tiles of different shapes. I'm not 100% percent sure about the difference between wood and stone, probably something about how long it takes to explode, or dose the wood get infected from the fire?
The background is not distracting.