Solid game so far.
I really like the work you've put into the maps, even though I'm not fond of the grassy paths on the city's cobblestone's floor.
If you want to take it further, to fix the grassy edges along walls (and that applies to everything that changes based on the 8 tiles around it, like carpets), you can use SHIFT while placing a tile. It'll look like it's surrounded by the same tile, you can then change any of them to fine-tune which edges should actually have grass on them.
By the way, it looks like you left your game's project file inside the folder, I'm not sure if you meant to.
For people whose games break: open the zip using WinRAR, then press CTRL + E to open the encoding menu. Choose Japanese (yes, even if you pick the English version), and the main folder's name should change. If that's the case, all that's left for you to do is to drag it wherever you want to extract into.