Missile Command 1.0b

Missile Command is the latest clone of the age old Missile Command.
Protect six cities from alien laser beams.
Features 12 different city sprites (mmm, variation!) original music and 2 player mode. (The second player controls the spaceship...)
Enhancements:
- 3 new types of plasma bolts (the lines coming from the sky)
- Ammo crates
- Removed the song that sucked the most from the soundtrack and replaced it with a 30 second segment of "PingPong" by 047, with their kind permission. (The side effect was that now I have 5 songs that suck the most by comparison...)
- Nice apocalyptic background with stars and stuff
- Apocalyptic fog!
- Cmd-C now copies the latest score to the clipboard, for quick pasting into IRC =)
- Boosted the "Nice" bonus.
- Added two new cities (there are now 4 real cities, 4 "borrowed" and 4 original)
- Also replaced the "classic" city with a classicer city.
- Universal binary
- Tweaked the difficulty (should be slightly less hard now ;)
- Title screen braggery
- Fixed a sound bug
- Fixed a bug with the sprites field in preferences
- Yeah, fixed a bunch of bugs.
- Crosshair instead of regular cursor
- Great technical details on how the Earth defense works added to the readme file
- Optimized drawing stuff
- Some random minor changes.