My favorite game is Hearthstone Battlegrounds. I find it very mentally stimulating because you have to employ a great deal of flexibility every time you play. As someone who tends to overthink turn-based games, I like that Battlegrounds pushes me out of my comfort zone by forcing me to make fast decisions. If you are familiar with the game, I took this screenshot because the interaction between my opponent's hero power and trinket was quite funny, and I don't think it was intended to be in the game.