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Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Puzzle Kit 3 in 1 Free.
Puzzle Kit 3 in 1 v1.5
Puzzle Kit is an excellent basis for the development of your game. It is very easy to use. Included are 3 types of puzzle games: Puzzle Classic, Puzzle Logic and Mosaic.
WebGL Demo
Features:
– 3 types of puzzle games
– Easy to add new images
– It does not require prior preparation (cutting) images
– Easy to add new types of puzzle pieces compounds
– You can use a non-square images
Coding Bonus:
– UI system loading windows
– Easy-to-use system events