Yep, it's definitely intentional that you can tackle the puzzles/worlds in a lot of different orders. Not totally ANY order due to how the map works, but I wanted players to be able to get stuck on a puzzle or mechanic and go try some other puzzles while they let the solution to the first one simmer. I absolutely should have made it more prominent that it was intentional though LOL, definitely agree you can go the whole game without even noticing the worlds have numbers.