Card game Balatro was a huge hit last year – but a year-long struggle with the European age ratings board has exposed how well-meaning rules can have unintended consequences

Over the last few months, the makers of a popular card game have been wrestling with the byzantine process that surrounds video game age classifications. Age ratings are intended to help parents determine whether or not a game is appropriate for their children. But in practice, an erroneous label doesn’t just mislead consumers – it can be the difference between success or failure.

Balatro is an award-winning poker game made by an anonymous game developer known as LocalThunk, in which the only guiding principle is chaos. In each match the player must divine the best possible poker hand out of a randomised draw, but the conditions fluctuate constantly. In one round, the game might prevent you from using an entire suit or junk all your face cards, while the next round might challenge you to achieve an eyebrow-raising score with only a single hand. As the game progresses, players accrue jokers for their deck that add yet more wild rules.