The creator of Flappy Bird, Dong Nguyen, has declared that the popular game is gone for good, despite its massive success. The game had soared to the top of Apple’s App Store and was generating around $50,000 daily from ads. Yet Nguyen, a 29-year-old developer from Vietnam, chose to remove it because of how addictive it became.

In an interview with Forbes, Nguyen explained that Flappy Bird was meant to be a light, casual game played during short breaks. However, its intense addictiveness disturbed him. He believed it had become problematic and the best solution was to take it down entirely. During the interview, Nguyen appeared visibly anxious, even smoking several cigarettes.

The game’s removal sparked desperation among fans, with some willing to spend up to $100,000 on eBay for iPhones that still had the game installed. Some app store users left dramatic reviews, claiming they would have rather made a deal with the devil than download it — a dark image Nguyen wanted to avoid.

Nguyen also revealed on Twitter that the sudden fame had overwhelmed him. Speaking to Forbes, he admitted that he was losing sleep and felt his life had become uncomfortable. Still, he found some positives in the experience, saying it boosted his confidence and gave him the freedom to pursue future projects.

While Flappy Bird won’t be returning, Nguyen hinted that he plans to release new games, hopefully less addictive ones.