There is no "exact science" to this - it mostly just takes practice and familiarity of both you and your opponents plans! Personally, I try to retreat if I'm not 100% confident when my opponent snaps, as some decks such as Sera Miracle tend to save all their big plays until the final turn, and can really catch you out if you're not prepared. The best tip we can give you in this regard is to remember that Marvel Snap's rank progression isn't tied to how many games you win or lose, but the number of cubes those games are worth. Once you add in the fact that Snap games are so fast, retreating/conceding feels less like a loss in most TCGs and more like folding a hand in Poker: You made a choice to lose a little bit now to keep the rest for another day. However, snapping aggressively yourself if a different kettle of fish! Our biggest tip to offer here is to Snap before you make what you think is your game-winning play, after all, the more information your opponent has, the more likely they are to retreat instead of giving you those extra cubes! For more in-depth guides on how to snap and retreat, check out our guides How To: Snap and Hot To: Retreat.