These machines don't cost real world money to unlock - you simply need to level up your account - but the coins you use to play and level up do cost real world money. There are, however, nearly 50 other machines available in the current version and more being added regularly. When you start the game, there is only one machine available with a maximum of nine lines, so you can only ever bet nine coins at a time.
These coins are then bet in each game on however many lines you want. Slotomania does a great job of translating that addictive quality to the small screen, but is it enough to warrant a download? So an iPad version that doesn't cost real money to play is a perfect solution. The problem, of course, is that video slots are also immensely complex and the cost can add up fast. At any given time, you want to see just one more spin - to know where it will land. Slot machines have an oddly addictive quality.
