@Chong Li, I found a tactic that works best for me. First I place all sigils that have pairs, and lone sigils go last. The idea is that if sigils have pairs, they could be arranged sort of symmetrically, and once you do that, you can see where you need to break that symmetry to fit the other ones

These ones were very easy. I liked solving them

@chong Li. a good idea is to arrange all 2x2 and 4x1 to reduce the space, then complete the rest with the other tetronimos

Hah. Literally all my solution are totally different to yours. Although I haven’t yet solved the last one. Any tips on how to attack it? I find just randomly placing blocks isn’t a good way to solve such a large one.

Indeed, there are multiple solutions for each puzzle. As an added bit of fun, I try to see if I can solve each puzzle in such a way so as to not have any solved sub-puzzles. I swear it's impossible with #5 tho....

(Also fun fact: Puzzle #6 is larger than literally any such tetromino arranger in the original game!)

My solutions were slightly different for the green ones, and very different for the yellow and red ones.

Have problem mentioned above, do one of the yellow puzzles wrong and it's locked withous any chanse to redo.

Yellow has a solution that doesn't count as a solve. I accidentally reset the puzzle before screenshoting it but I have to let people know.

thank you, I hate those so much