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What Is Billiards?

Billiards is a broad term for cue sports — games played on a rectangular felt-covered table where players use a tapered stick (a cue) to strike balls. The family includes pool (pocket billiards), snooker, and carom billiards, each with distinct rules, equipment, and competitive traditions. An estimated 40 million Americans play pool at least occasionally.

From Lawn to Table

Billiards originated as an outdoor lawn game in 15th-century France, similar to croquet. Moving it indoors meant placing a green cloth over a table to simulate grass. Early tables had flat walls (banks) to keep balls from rolling off — players discovered that bouncing balls off these walls added a strategic dimension, and the “bank shot” was born.

By the 1800s, billiards was enormously popular across Europe and America, played in dedicated halls, private clubs, and taverns. The game attracted both aristocrats and hustlers — a duality it has never quite shaken.

The Main Games

8-Ball Pool

The most widely played cue sport in the world. Fifteen object balls (seven solids, seven stripes, and the 8-ball) are racked in a triangle. After the break, each player claims either solids or stripes based on the first ball legally pocketed. You must pocket all seven of your group, then sink the 8-ball to win. Scratching (pocketing the cue ball) on the 8-ball loses the game.

8-ball is what most people play in bars, basements, and rec rooms. The rules vary slightly from house to house — “bar rules” versus “official rules” is an eternal debate — but the basic structure is universal.

9-Ball Pool

A faster, more aggressive game played with only balls 1 through 9. Players must contact the lowest-numbered ball first on each shot, but can pocket any ball that goes in. Whoever sinks the 9-ball wins — including on a lucky combination shot off the break. 9-ball is the dominant format in professional pool because it produces more dramatic, fast-paced matches.

Snooker

Played on a much larger table (12 x 6 feet versus 9 x 4.5 feet for pool) with smaller pockets and 21 object balls. Players alternate potting red balls (1 point each) and colored balls (2-7 points), with colors returned to the table after each pot until all reds are gone. Then the colors are potted in order. Frames and matches can last hours.

Snooker is enormous in the UK, China, and parts of Asia. The World Snooker Championship at the Crucible Theatre in Sheffield draws millions of television viewers. The precision required — pocketing balls at distances and angles that would be difficult on a pool table, on a table 50% larger with smaller pockets — is extraordinary.

Carom Billiards

Played on a pocketless table with three balls. The player must make the cue ball contact both other balls in a single shot. Three-cushion billiards adds the requirement that the cue ball must contact at least three cushions before hitting the second object ball. It’s the most geometrically demanding form of billiards, requiring players to calculate multiple bank angles mentally.

The Physics

Billiards is applied physics on a felt surface. Every shot involves:

Angle of reflection — When a ball hits a cushion, it rebounds at an angle equal to the angle of incidence (approximately — cloth friction and ball spin modify this). Good players calculate multiple-bank shots using these geometric principles.

Spin (English) — Striking the cue ball off-center imparts spin that changes its path after contact with an object ball or cushion. Top spin makes the cue ball follow forward; backspin (draw) makes it return; side spin alters its angle off cushions. Controlling spin is what separates intermediate players from advanced ones.

Speed control — Perhaps the most important skill. Pocketing a ball isn’t enough — you must leave the cue ball in position for your next shot. Position play requires controlling exactly how fast the cue ball travels and where it stops after contact.

The geometry and physics are learnable, but the execution requires thousands of hours of practice. Your body must internalize the physics until stroke mechanics become automatic, freeing your mind to think strategically about sequences of shots rather than individual pots.

Pool Culture

Pool halls have a complicated cultural reputation — partly social gathering places, partly associated with gambling and misspent youth. The 1961 film The Hustler (and its 1986 sequel The Color of Money) cemented pool’s image as a game of skill, hustle, and personal drama.

Professional pool has struggled for mainstream recognition despite remarkable athletic skill. Efren Reyes (Philippines), widely considered the greatest pool player ever, could execute shots that looked physically impossible. The Philippines and Taiwan produce disproportionate numbers of world-class players relative to their populations.

The sport was included in the 2017 Asian Games and was approved for the 2028 Los Angeles Olympics, a milestone that may finally bring cue sports the visibility and legitimacy its practitioners have long sought.

Getting Started

A decent cue costs $50-200 for a beginner. Most important: play on the best table you can access. Consistent, level surfaces and responsive cushions make learning proper technique much easier than warped bar tables. Watch your fundamentals — stance, bridge hand, stroke mechanics — before worrying about trick shots. And remember: the best players don’t make difficult shots. They make shots that leave easy next shots. That’s the real game.

Frequently Asked Questions

What is the difference between billiards, pool, and snooker?

Billiards (carom) is played on a pocketless table with three balls, scoring by making the cue ball contact both object balls. Pool uses a six-pocket table with 15 numbered balls; popular games include 8-ball and 9-ball. Snooker uses a larger six-pocket table with 21 object balls (15 reds and 6 colors) and has more complex scoring rules.

What size is a standard pool table?

Standard American pool tables come in 7-foot (bar size), 8-foot (home/recreational), and 9-foot (tournament/professional) sizes. Snooker tables are larger — standard tournament size is 12 feet by 6 feet. The playing surface is covered in woven wool cloth (traditionally green, though other colors are now common) stretched over a slate bed.

Why is the cloth on a billiards table green?

The green cloth tradition dates to the 1500s-1600s when billiards evolved from outdoor lawn games. The green felt was meant to simulate grass. While green remains the most traditional color, modern billiards cloth comes in many colors. Professional tournaments sometimes use blue cloth for better television visibility.

Further Reading

• World Pool-Billiard Association
• World Snooker Tour
• Encyclopedia Britannica - Billiards