Thanks. a simple theme, great art by kenney.nl(slightly modified and expanded) and music found here: https://opengameart.org/content/4-chiptunes-adventure. it was easier to visualize the concept and quickly start prototyping. making the game small enough to fit on most screens saved alot of time since no scaling was needed. i'm glad you like the puzzles as i was half asleep when i made them.
tried Gravity pool, it was challenging to time correctly but fun, i liked the concept and simple controlls, left a good rate.