All coins 1.4

Coins in OvO are used to buy cosmetic items in the shop also found in the shop is one of the secret coins

The other Secret Coin is found in level 33 by waiting for a bit then collecting the coin after it is shown (if having trouble click this:https://www.youtube.com/watch?v=DD56VolTLpE)

there is also a way in 1.4.2 to get infinite coins click on this: (https://www.youtube.com/watch?v=MgiuuSsAbDs)