(informal) Performing as well as one can.

(video games) The option to play again through a previously completed game, carrying over characters, attributes, or equipment from the previous play session.

(Australia, idiomatic) To improve one's performance through practice or additional effort.

plural of alternate reality game

An interactive networked narrative that uses the real world as a platform and employs various media to deliver a story that may be altered by players' ideas or actions.

Excessive commenting on the actions and decisions of someone playing a video game, by an individual who is not playing the game.

present participle of back-seat game

The shell game, or thimblerig.

Third-person singular simple present indicative form of up one's game

present participle of up one's game