Sifu har været længe undervejs, og udvikleren Sloclap har da også en tendens til at give sig god tid, når det gælder udviklingen af deres spil. Men tiden har været det hele værd, for spillet er en gedigen succes verden over.
Eksempelvis har Sloclap, via en pressemeddelelse sendt til Gamereactor, bekræftet at spillet nu har solgt over en million eksemplarer. Producer Pierre Tarno har sagt følgende:
"We set out to create an authentic, Kung Fu action game that paid homage to our favorite Kung Fu films. We're thankful for our fans around the world but we are especially humbled by the incredible reception the game has had in China. Our internal metric of success was how well the game was received there and knowing that fans in China are the largest segment of our sales outside of North America and the positive reviews from Chinese critics means a lot to us."
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