1. Use W, A, S, D to control the spacecraft and press Space to launch. 2. The initial fuel value is 15, decreasing by 1 point per second, when the fuel value is 0, the game ends. 3. Touching a dropped fuel bottle increases by 15 points, up to a maximum of 30 points. 4. Hitting an enemy ship increases by 5 points. The planet needs to be hit twice, adding 10 points. 10 points are deducted for hitting an ally. 5. If you lose 15 fuel points by hitting an enemy, you will lose 10 points from hitting an enemy. 6. Negative scores are allowed in the game. 7. Press P to pause the game and M to mute. ca：