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

(automotive) The action of excessively commenting on the actions and decisions of someone operating a motor vehicle, by an individual who is not operating the vehicle, in an attempt to control the vehicle.

present participle of back-seat drive

(transitive, figuratively) to cause problems for one at a later time.

Used other than figuratively or idiomatically: see flat, on, back. / (idiomatic) without recourse; helpless

(idiomatic) To exhaust a person's means or resources; to constitute more than they are reasonably able to do. / Used other than figuratively or idiomatically: see break, back.

(informal, figuratively) to protect or look out for someone

Third-person singular simple present indicative form of back-seat game

(video games) To commentate excessively on the in-game decisions and actions of someone playing a video game, whilst not playing the game.