Instructions :
As far as gameplay goes, it plays as close to the original as possible. You use the left-stick to turn your ship, and press the B button for your thrust. The thrust will vary depending on how long you hold the button down like the original game. You get 20 points for a big asteroid, 50 for a medium one, and 100 for a small one. You have 5 shots, which are shot as fast as you can press the A button. You don't hold it down, like the original. Once those 5 shots are on the screen, you can't shoot any more until one of them is no longer active, plus a slight delay, just like the original. I haven't played in a while, but I think I got all of this pretty close. Also, when a level starts, you will not appear until there are no asteroids in your path, if you are starting a new level while still alive, and an asteroid appears over you, you will slightly blink instead of not appearing like the beginning of the game or after you die. During this time, you can move, but can not shoot until you are clear and have turned solid. If you hit an asteroid with your ship, it does not break the asteroid. On NORMAL difficulty, you get an extra ship every 10,000 points, like the original. Your score is shown in the top left, along with the number of ships you have left. In the top middle, your level number is shown, and on the top right, the amount of points left until you get another life, or on the menu screen, the number of points needed for each ship, depending on the difficulty level you have selected on the menu. Right below center screen is the start menu. You use the D-PAD to navigate. UP/DOWN changes between the difficulty and number of lives menus. LEFT/RIGHT increases or decreases each of these settings. The difficulty choices are EASY, NORMAL, HARD, and INSANE. I tried to make NORMAL as close to the original as possible. You start with 3 big asteroids on EASY, 4 big asteroids on NORMAL, 5 big asteroids on HARD, and 6 big asteroids on INSANE. The speed of the asteroids range from 1/2 speed for EASY to 2x speed for INSANE. You get a free ship every 7,500 points for EASY up to every 15,000 points for INSANE. Each level you complete, the speed of the asteroids will increase by 1 percent of the current factor. Just as in the game, each asteroid has a random speed, depending on size. The big asteroids are the slowest, and the small asteroids are the fastest. Each new level, an extra big asteroid is added, until you reach the max of 10 asteroids. You can pause the game at any time with the PLUS button. You also use the PLUS button to start each new game after you've set your options. There is no quit menu in the pause menu. If you want to quit, hit the HOME button, or if you want to just quit a level, drive into asteroids until you run out of lives.