1. Use W, A, S, D to control the spacecraft and press Space to launch. 2.The initial fuel value is 15 and decreases by 1 point every second. When the fuel value reaches 0, the game ends. 3. Touching the dropped fuel bottle can increase 15 points, with a maximum value of 30 points. 4. Hitting the enemy spacecraft adds 5 points. The planet needs to be hit twice, which adds 10 points. 10 points are deducted for hitting a friendly enemy. 5. 15 points of fuel will be lost if it hits the enemy, and 10 points will be deducted if it hits a friendly party. 6. The game allows negative points. 7. Press P to pause the game and M to mute. Start your interstellar war!