Game currency:
Each player starts with a certain amount of game currency (for example, 100 coins).
After each victory, the player receives additional coins, and after a defeat, he loses some coins.
Players can use this currency to purchase characters or improve their skills.

Characters:
The game has several characters with different characteristics (for example, strength, speed, luck).
Each character has its own value in game currency.
Players can purchase characters to use in battle.

Scenario:
Players choose their character and bet a certain number of coins.
Then they play rock-paper-scissors.
The winner receives coins from the loser.
Players can use their coins to purchase new characters or upgrade existing ones.