If you’re a newcomer to the Nintendo Switch, or perhaps you’re buying for someone who needs a boost to their game library, it’s always wise to snag the console’s best games when they go on sale, as they rarely do. Best Buy is listing several games that I consider to be must-play experiences for $20 off — both in physical and digital formats. Other retailers, like Amazon and Walmart, are honoring the price cuts, too. Better yet, there’s a range of games included in this sale, suiting people who want a shooter, a turn-based strategy game, or a good ol’ 3D Mario platformer. Super Mario Odyssey is an inviting and…