The company updates its user agreement to say it can render a Nintendo console 'unusable' if any piracy or tampering is detected.

Japanese video-game maker Nintendo has reported a 43% decline in profit for the fiscal year through March, but promised a turnaround as its Switch console upgrade goes on sale in June.

Nintendo expects to sell 15 million units of its new Switch 2 gaming console by March 2026, when the company's financial year ends, according to its first sales forecast for the long-awaited new gaming generation.