Fun for lost cities fans
I finished the First Campaign Path and at end it has three more Paths namely, Granite, Moonstone and Diamond Paths. It is $3 for those in app purchase.
Also to play New Challenges its another $3. So yea its $10 app ...$4 for Keltis (play against AI or humans mix and match 2 to 4 player). Campaign is solo mode but kinda different where you reach your target score to advance to next stone in path. New Challenges is like a mix of paths with 5 different colored wishing stones and discard tiles.
Tutorial is excellent although I just played first couple games its easy to follow. Bump up game speed in settings as default is turtle slow. Note this does have the variant ascending/descending which is chosen once you place your second card (assuming not same value) up or down.
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Keltis