After the Twin Shot 2 game has been loaded use the "Click To Start" button and click the "Play" text from the opening window. To play against to computer choose the "1 Player" section or choose the "2 Player" section for playing as 2 players. Then re-click the "Play" text and assign the game difficulty level; then the game starts.
If you play this game alone you must use the "Arrow Keys" and "Space" keys from your keyboard; if you play with your friend, the second player uses the "A, S, W, D - F" keys to play. TwoPlayerGames.org hopes you have fun.