Reddit is a goldmine. Users occasionally post expired codes—but sometimes, developers lurk there. Follow these subreddits and sort by "New." Look for posts titled: "First 10 to DM get a coupon code."
Sometimes, despite your best efforts, every you find is expired. Do not despair. Here are three alternatives:
Most simulator games have a vibrant Discord community. Developers often drop timed codes during:
If you play on mobile: