Facebook announces a new feature that lets users try out games directly within News Feed. Part of the social network's continued effort to improve game discovery, the new "feed gaming" feature lets developers create a short demo of their game that users can play when they see it mentioned in News Feed and Timeline.

These samples don't need players to authorize an app and don't collect user data, creating a risk-free environment for users to test a game before they commit and give a game access to their personal information. Once the sample is complete, users are prompted to play the full version of the game.

Feed gaming is already being used by King.com's Bubble Witch Saga, Rovio's Angry Birds Friends, Tetris Online's Tetris Battle and Idle Games's Idle Worship. Bubble Witch Saga offers players a level to play and then rewards them with extra soft currency if they install the game. Angry Birds Friends challenges users to beat a level score posted by a friend. Idle Worship provides a mini-game designed to generate interest in the full game. Tetris Battle, meanwhile, allows users to publish video replays of two-player battles.

See more details in Facebook's documentation >>