Now available online, you can play the Noah's Ark slot machine by IGT for free without having to register an account or download any files beforehand. Play Noah's Ark Video slots by IGT online. This free slot features: 5 reels, Free Spins, Scatter Symbols, Wild symbols. How to Win on IGT's Slots Machine Noah's Ark. Winning on this slot is more complicated than usual – thanks to the chance of getting anywhere from 3 of a kind. It is not always clear how many animals are involved in each win. Six doves in any position generate 10 spins, while five doves equal 5 free rounds. If you have 4 Bonus Symbols in any position, your total bet is doubled. Scatter icons also come in two varieties, with either one or two doves on them and can trigger Gibraltar exchange rate spin bonuses. You've Won a Free Spin.