I would go 5 but...

The cost of each game is 500 coins you only get bonus is 1000 every 12 hours. The game is fun but you cant play very long if you have little coins. Room for improvement... Do bonus every 4 hours, give a bonus once you complete a tier of bronze silver and gold. You get nada when you complete a tier. I almost never win on the poker part. I know you want to make money off coins in which I have made 2 purchases but when you dont really get anything in return makes you not want to play. Im sure if you made a couple of adjustments in the coin situation you are more likely to get people to make in app purchases.

Simplydawn about Slingo Shuffle: Number Matching Game, v1.19.1.0