Hearthstone: How Journey to Un'Goro has put off the casual player

Based on the World of Warcraft franchise, Hearthstone sees players construct decks and battle in a virtual inn. Like almost all card games, there's an element of luck, but creating an original deck that actually wins matches requires knowledge, skill and -- thanks to the latest expansion -- a lot of money. I've had an excellent time playing Hearthstone the majority of the time. Over the years, I've purchased the Welcome Pack for £3.99 and all four Adventures, which have ranged from £13.99 to £17.49. That probably seems like a fair bit of cash to splash on digital cards.