Cue sports playing nine-ball. Snooker balls are smaller than American-style pool balls with a diameter of 52.5 mm ( in), and come in sets of 22 (15 reds, 6 "", and a cue ball). English billiard balls are the same size as snooker balls and come in sets of three balls (two cue balls and a red, an object ball). Other games, such as bumper pool, have custom ball sets. Billiard balls have been made from many different materials since the start of the game, including clay, bakelite, celluloid, crystallite, ivory, plastic, steel and wood. The dominant material from 1627 until the
Snooker (video game) can be selected using the space bar and cursor keys respectively. The limited colour selections of the home computers of the time (often limited to 8 colours) along with the memory sizes (the VIC-20 version ran in less than 6K of RAM) meant the user experience was limited compared to more modern implementations. There were also other games simply titled "Snooker" for the ZX Spectrum, including one release by Microbyte and Artic Computing Ltd also in 1983. The games were followed in 1984 by Steve Davis Snooker, and Steve Davis World Snooker in 1985. The game received a mention in