To navigate through the Siberia underground you need to watch out for the tricky gravity. Press space bar to add thrust to your vehicle and release it before hitting the roof. That’s really all you need to do. Sound easy? Remember to watch out for obstacles in the way. A few hints, press the button 5 whenever you wish to toggle the sound. Press the button P to pause or unpause the game.. Looking for a good score? While trying to fly as straight as possible is a bit easier, it will not result in such a high score. Try to do some daring maneuvers to receive some extra points. Metro Siberia is a puzzle game, available on www.flash-games.net, for your spare time relaxing and entertainment. Have a nice hit and enjoy yourself.