Spot It! Duel from Asmodee has just hit a million downloads. And, perhaps more importantly, it's been updated with some interesting new features.
The game now has Daily Challenges. These only last for 24 hours though, as you might be able to tell from the name. It's a good reason to jump back into the game every day to make sure you're getting the best rewards.
And speaking of rewards, there's a new system there too. Each game gets you keys now, which you can use to unlock chests. Even if you lose, you're going to get some keys. More keys, more chests. You know it makes sense.