Pirates Destroyer V2

Movement: ONLY using the arrow keys (< , >) 

Shooting : SPACE

 Missile Launching: Z 

Rules:

• Avoid the rocks, they'll insta-kill you.
• Avoid colliding with the ships, they'll take 2 lives from you.
• Kill as many ships as you can.
• ONLY 1 power up at a time.
• ONLY 1 missile at a time.

Difficulties :

Easy - enemy ships don't shoot back.

Medium - enemy ships shoot every 2 seconds.

Hard - enemy ships shoot every 1 second.

You'll also see surprise boxes, which give some power ups like speed, damage, multi-attack, shield, life. 

When you see a missile, take it, and when you feel like it - press Z. it will boom every ship and rock in the screen.

NOTICE: Your cannon balls will destroy objects when they hit them. Shoot carefully!