They will be reset each time you start a new session.
These virtual credits are preloaded with virtual coins. Modern casinos offer many of their places in demo mode.
Your Free Play session ends when the credits expire. You can use a limited amount of Free Play credits at certain casinos to play free slots. However, most online casinos offer hundreds of free places to play. You can only play real money slots at all land-based casinos. You can play your favorite slot, check out a new release, and keep your money safe. You can enjoy real-money slot action without taking any risks.