Took me a while to get into it (ie to stop placing tiles any old where and focus :p) but when I did I found it a really neat puzzle. I don't think I've seen this kind of placement puzzle before and it was quite involving - choices to make about what type of tile must go in what location to win, learning about what kind of tiles work in the middle, on the edge, etc. Really good :)
Thanks for playing! I'm really happy that I was able to accomplish my design goal of making something interesting and thoughtful, but not pre-designed with one specific solution. This game takes some inspiration from the board game Railroad Ink if you want to try something else with a similar feel!