This app was mentioned in 4 comments, with an average of 1.50 upvotes
Try Heroes of Kalevala, without doubt it's one of my all time favorites.
Here's the paid for one which has no ads and doesn't require an internet connection: https://play.google.com/store/apps/details?id=com.the10tons.heroesofkalevala
Sure, my all time favorite is Heroes of Kalevala