It's quite a common issue that players cannot find last three tiles in the location Western Outpost. These are usually hidden in a secret area, which is revealed after Diggy performs a special dance on the dance floor in the Saloon.

In the case of these three tiles, unfortunately, the Last Tile Finder is unable to find them, since the area has not yet been revealed in the game :/

So let's see where to find them! 😉

At first, please, find the Saloon:

Enter the saloon and dance on the dance floor by stepping on the tiles with the footprints - I have highlighted these tiles with the red Xs 😉
Don't worry, there is no special order, just make sure to step on all tiles which are marked with the red Xs in the following picture:

After this is done, the secret area will be revealed and except for the missing tiles, your Diggy will find a treasure piece, too! <3

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Good luck further in the game, diggers! 🙂