Coin Flip

Coin flips as a core resolution mechanic

Prince Valiant

https://www.drivethrurpg.com/product/216078/Prince-Valiant

Flip a number of coins equal to your Attribute+skill. Count the heads. Compare to opponents result or target number.

Clink

https://www.kickstarter.com/projects/sigilstonepublishing/clink-an-rpg-of-mysterious-drifters-and-risky-coin

Each player starts with 2 coins, and can earn more as their triggers are activated and Creeds are followed. You can’t hold more than 3 coins at any given time. You can spend (give to gm) coins for flashbacks.

When your Drifter attempts something difficult or dangerous and they have a relevant Flashback, flip two coins: