1. Use W、A、S、D to control the spacecraft, press Space Launch. 2. Fuel initial value is 15, decreases by 1 point every second, when fuel value reaches 0, game ends. 3. The fuel bottle below the touch can be increased by 15 points, the maximum value is 30 points.。 4. The attack on the enemy's spacecraft increased by 5 seconds. The attack on the planet required twice, increasing by 10 seconds. The attack on the enemy's spacecraft decreased by 10 percent. 5. When hit by enemy, it loses 15 points of fuel, when hit by enemy, it loses 10 points. 6. The game allows negative points. 7. Press P to pause the game, press M to pause the game. Start your cosmic battle!