Cool idea! At first I didn’t get it (placed stuff randomly) and thought “oh too bad that would’ve been so cool if depending on the surrounding you get more points!”… then I read the help section ._.” WELL DONE! Only thing missing imho is to allow for replacement of one tile by another. But it could very well be this way on purpose. I would have loved to see a score on top of the completion % also! Like, you need to do X to reach 100%, but you can go further to grind your score.
Very cool anyway, enjoyed it! <3