Thanks! Really glad you enjoyed it and the pacing/introduction of the mechanics!
When it came to building the puzzles, i had an idea early on of the order that i wanted to introduce them in and to vaguely follow that Nintendo rules of 3 design (even though i didn't do 3 variations of each mechanic later on), then finally do a few "harder" levels that incorporated all the mechanics together (i absolutely overcomplicated level 14... you can just like, move south and finish it ez and i didnt even realise!
Actually building the levels? i honestly just threw tiles down, gave myself a vague turn limit supply limit and kept trying to hit it and moving stuff around. I'm terrible at these types of games normally, so it took aaaaages towards the end!