This is a jet simulator that I made. The jet has contrails which is basicaly smoke coming out from the back like a rocket ship! Use arrow keys to control...I never used the mouse to control because the smoke was not following smoothly with the turn of the ship! Press s for sky background, Press h for hot sun background, Press n for night background Press 1,2,3,4,5 for different planes Press Space and left arrow key at the same time to stamp the left smoke coming out of the left engine. Press Space and the right arrow key at the same time to stamp the right smoke coming out of the right engine. Press Space and the up arrow key to stamp smoke when you are going up. Press Space and the down arrow key to stamp smoke when you are going down. Press "e" to erase all stamped smoke or press the Green Flag to erase all and start over! This feature is there if you want to create a picture!