"Liar's Poker" is a popular game often played with a standard deck of cards. Players use their cards to create a hand and then make bids on the strength of their hands, trying to bluff their opponents. The goal is to outsmart others by convincing them that one's hand is stronger than it actually is, leading to strategic deception. The game gained fame through the book "Liar's Poker" by author and former Wall Street trader Michael Lewis. In the book, Lewis describes the high-stakes world of finance in the 1980s, where traders used similar tactics of bluffing and risk-taking to succeed in the competitive environment.