Hey Tipu, thanks for playing my game on stream yesterday. Here is my feedback to you: Great idea for a puzzle game, a very nice extension of Sokoban. The sound gets a little annoying, I would tone it down or use a more pleasant sound.
Regarding the mechanics, it was not clear to me that boxes vanish when you move one into the other? Why should they? Everything else was self explanatory. It is not a big deal, though, was easy enough to find it out.
All in all: well done, I had fun and I played it through to the end.