In the marketplace of digital entertainment, the rules governing regret are not universal — they are written by whoever built the storefront. Across Steam, GOG, PlayStation, Xbox, Epic, and Nintendo, the same act of buying a game can carry vastly different rights depending on where the transaction occurs, a disparity that matters most in jurisdictions like Ireland where EU consumer law sets a legal floor that each platform interprets in its own way. The gap between GOG's generous thirty-day open window and Nintendo's effectively closed door is not merely a business policy difference — it is a