Coins are a type of currency that are consumables. While shop cheese and fraise have a coin in their image, these are often not referred to as "coins", but instead just simply as cheese/coin. Unlike inventoryevent consumables, coins are not tied to a specific event and never disappear after an event.
The only coin that is tradeable is cheese coins. The only coins that can be "used" and converted into shop currencies are cheese coins and fraise coins. Other than cheese and fraise, all other coins are only used in village rooms.
Cheese coins (cc) are the most versatile coin, as the may be "used" like a normal consumable to earn shop cheese, traded with other players (if they haven't been used), and can be earned multiple ways. As such, they are the primary means of exchange for consumables / inventory items. Their one downside however is that they cannot be traded to NPCs (only bought from NPCs). The inventory limit is 200 cheesecoins.
Cheese coins may be earned through adventures, trading tickets to the Prof in village rooms (10 tickets for 20cc), or trading any other coin with Papaille in village rooms (50 coins for 50cc).
Fraise coins, like cheese coins, can be "used" to earn shop fraise. However unlike cheese coins, it can not be traded, they are only awarded in limited amounts through adventures as one time rewards and they are rare.
Tickets are earned from adventures as random rewards, and occasionally in larger quantities as one time reward. They can also be earned from completing daily quests. They can be used in village rooms by trading with Indiana Mouse for event rewards and the Prof for cheese coins or a selection of random consumables that reset each day.
Shaman coins can be earned in any game mode that has a shaman. You earn shaman coins based on how many mice you save and on what shaman mode you are using. Shaman coins can be traded to the Oracle for various rewards, Papaille for cheese coins, or Elise for random consumables each day.
Players receive one Shaman coin per 4, 5, or 6 mice saved in divine, hard, or normal mode, respectively. Depending on the player’s selected shaman mode, a certain amount of mice saved earns one coin. The variable amount of shaman coins is contingent on the mode’s difficulty.
Racing coins are earned in the racing game mode, with 1 coin being awarded for every 5 complete maps (doesn't matter if you come in first or last). Racing coins can be traded to Buffy for various rewards, Papaille for cheese coins, or Elise for random consumables each day.
Survivor coins are earned in the survivor game mode, with 1 coin being earned for every 5 mice killed[confirm]. Survivor coins can be traded to Archain von Drekkemaus for various rewards, Papaille for cheese coins, or Elise for random consumables each day.
Bootcamp coins are earned in the bootcamp game mode, with one coin earned the first time you completing a round (you will get a coin even if that win doesn't count toward your bootcamp total due to room hopping; as such it's possible to have more coins than bootcamp wins on your profile). Bootcamp coins can be traded to Cassidy for various rewards, Papaille for cheese coins, or Elise for random consumables each day.