I like this! Very simple and well executed. Puzzles have variety and get gradually more and more difficult with complexity added over time, making for a reasonable difficulty curve :)
Thanks for the feedback, Arttuys! We really tried to make the game gradually get harder at a reasonable rate. You know, when I play puzzle games, usually I get stuck pretty fast, and then give up hahaha by making the difficulty slowly grow, we tried to make the game less frustrating... and it seems we got it a bit right, at least :)