Each game lasts between 10 and 20 spins depending on the Slingo bingo slot you are playing.There are 12 Slingo win lines in any game of Slingo – win lines being five numbers in a row.It works using a 5×5 grid that players use to identify numbers to complete Slingos – 5 numbers in a line.Slingo is a real money or free play demo game that combines 75 ball bingo marking with online slots gaming technology.But how does Slingo work? From spins to full house – how Slingo bingo slots work Just choose a website, sign up and browse games categories for Slingo additionally, you can look for free Slingo slots by hovering over the game for the demo option (if free play is available). But to be honest, most casinos offer free play and practice modes of the game – this is the best way to learn. If you Google Slingo demo or look on youtube for Slingo demos, there’s a good number of tutorials that explain the concept of Slingo.