"Blockbuster Sale" on the Nintendo eShop
"Blockbuster Sale" on the Nintendo eShop

Sales & Deals — My Nintendo Store - Nintendo Official Site

IMO this link on DekuDeals is a much better way to check for interesting games: https://www.dekudeals.com/hottest?filter[store]=eshop
Personal recommendation: Mr. Driller Drill Land is an excellent, underrated puzzle game that is less than $5 right now.