Some of the best Switch games are $20 off in the lead-up to Mario Day

These days, it feels like every day is a recognized holiday of some sort, whether it be National Donut Day, National Dress Day, or some other made-up holiday designed to celebrate… well, something. And while March 10th — aka Mario Day — may not be formally recognized by the US government, it’s one of the ones we at The Verge look forward to most. That’s because it’s one of the best…