The only complaint I have about your puzzles is that in some the double lined box moves the single lined. In others, it's the opposite. This differs from game to game, even though stay consistent in the same game.
Yeah, apologies about that. In the earlier games the engine I'm reusing didn't have both types of blocks implemented and I redid the multipush blocks when needed, choosing the style of implementation on the spot, leading to variance in which way it behaves. I think the latest ones have been consistent about it, ever since I decided that for me the most intuitive way to think about the system is "non-multipush blocks are heavy, and thus they can only be pushed if they're the first thing you push".