8 Ball Pool is a popular online multiplayer game developed by Miniclip. It is a virtual simulation of the classic game of pool, where players can compete against each other in real-time. The game is available on various platforms, including mobile devices (iOS and Android) and web browsers. Here are some key features and aspects of 8 Ball Pool:

1. Gameplay: Players compete against each other in one-on-one matches, taking turns to pot their assigned balls (either stripes or solids) and the 8-ball to win the game.
2. Cues and Upgrades: Players can earn in-game currency by winning matches, which can be used to purchase new cues or upgrade existing ones. Each cue has its own set of statistics, affecting aspects like aiming, spin, and force.
3. Levels and Tiers: As players win matches and earn experience points, they level up. Higher levels unlock new features, cues, and game modes. There are also different tiers of tables with varying entry costs, allowing players to compete at different levels of difficulty.
4. Tournaments: The game features tournaments where players can compete against a series of opponents to win prizes. Tournaments often have entry fees, and the rewards are based on the player’s performance.
5. Friends and Social Features: Players can connect the game to their Facebook accounts to play against friends or challenge other players online. The game also includes a chat feature, allowing players to communicate during matches.
6. In-App Purchases: While the game is free to play, it includes in-app purchases for virtual coins and cash, which can be used to buy premium cues, entry into high-stakes games, or to quickly unlock various features.