I play both and I like them both, Splinterlands is a much quicker game, GU requires more strategy and time. The only thing I don't like about GU is the different priced packs you can buy, which makes it seem more like a pay to win game. But the reality is once the market is open and you can buy whatever cards people are selling that wont really matter... since most card games like these are technically pay to win, your chances of winning increase with the quality of your cards combined with luck and strategy.