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well, some free options that i use are Unity (sort of requires scripting in c# but there are plugins like playmaker that let you do visual flowcharting logic instrad), godot, puzzlescript, bitsy (no scripting required and in browser! this is what i usually recommend to beginners!).
some other stuff i havent used quite as much is Unreal Engine (also has visual scripting), Gamemaker (which has some weird non scripting logic stuff)
very beautiful and relaxing game :) reloading the page and changing things up a bit and exploring is fun
i enjoyed the game the most in the beginning when i was just messing around with the shapes without realizing that i was trying to reconstitute a landscape, so i think it would be cool if you could re-scramble the locked-in shapes by using the right mouse button for e.g.