coin-flip

🧠 Coin-Flip: Memory Matching, Free Crypto, and Play-to-Earn on RollerCoin Coin-Flip is one of the simplest and most beginner-friendly mini-games in RollerCoin. It’s a memory-style card matching game where you flip pairs of cards to find identical symbols. If you match all the pairs before the timer runs out, you earn temporary mining power —…