Fans of the suddenly popular app Flappy Bird were outraged when Vietnamese creator Nguyen Ha Dong pulled the app from Apple and Google mobile apps stores on Sunday.

Dong, 29, who was reportedly making $50,000 a day in ad revenue, announced last weekend that the game was ruining his life.

“I am sorry ‘Flappy Bird' users, 22 hours from now, I will take ‘Flappy Bird’ down,” Dong tweeted. “I cannot take this anymore.”

That post was retweeted more than 140,000 times.

Some fans responded with death threats and others said they would kill themselves if the app was no longer available.

@dongatory: I will take 'Flappy Bird' down. " I WILL MURDER YOU.

— Somie ❣ (@somatalabany) February 9, 2014

@dongatory No. Just. No. Even my highscore is 2, no, just, no, I'm gonna kill you.

— Yin † (@LemonMeowy) February 9, 2014

@dongatory YOURE A FUCKING PUSSY!!! And this game sucks anyway. But you’re still a pussy. Kill yourself.

— Naor Daniel (@Deraifus) February 9, 2014

@dongatory i'll find you and i'll kill you