Kylie Preece scored the jackpot after buying a £2 ticket on the National Bingo game at Shipleys Bingo and Social Club.
The mother-of-three, who is saving to get married, won the amount on July 25 – having been going there for 10 years.
The 30-year-old decided to splash the cash by celebrating with drinks with her future husband – along with plans for a holiday, wedding and home decorating.
She said the win was "emotional" – adding she was "excited and shocked" by the win.
Area manager John Anderson said: "We're over the moon when it goes to one of the regulars.
"She's getting married next year, she's a local lass and it's a nice life-changing amount.
"Everybody is very happy for her and she's been celebrating as well.
"It was a fabulous celebration of the big win.
"Of course, she was bowled over and she said to everyone she had a fantastic night.
"From start to finish it was fabulous."
Mr Anderson said the 30-year-old already had some plans for the jackpot sum.
He added: "I think she's got wedding plans, going on holiday and doing a bit of home decorating.
"She said it still hasn't sunk in yet, but it's certainly going to make the wedding a little bit more exclusive.
"And we said if she wants a game of bingo at the reception we would be very happy to do so."