Magic: The Gathering launched Chaos Vault: The Zeta Set, which puts the playtesting process in players' hands, per the official MTG announcement.
ReadingThe steal: if you make a product with a committed fanbase, let them break it before you ship it. Post a playable beta, ask for feedback by a date, and publish a changelog showing which feedback you acted on. The audience sees themselves in the product; the product ships stronger; launch day has pre-built advocates who already know what changed and why. For physical products, this works for games, toys, and collectibles. For food or drink, it's a recipe test. You don't need 10,000 testers—100 vocal ones who care enough to file detailed feedback will tell you what you need to know.
MY STASH TAKEWizards of the Coast could have shipped the set, watched Reddit complain about balance issues, and patched in month two. Instead, they said: help us finish this. That flips the table. Your customers go from audience to collaborators. They're invested in launch day because they're part of the ship. For a small brand, this is permission to share early work and ask for help. The people who beta-test become your first resellers because they already sold it to themselves.
WatchWatch for MTG to measure retention and engagement metrics from playtest participants versus non-participants at launch.