I'll say the synchronisation is quite terrible. There are parts where you have to hold down two at a go and even that isn't together. One is earlier than the other. Also, lowering the meter should only happen when you hit the wrong note. A common problem is your bar goes down entirely when you hold down a note you think you hit. The general beat is slightly off as notes aren't always on the lines but I suppose I can't complain as its a flash game. Sorry if this seemed harsh, i'm a guitar hero fan.
=P
Very relaxing music. Somehow i just loved watching the number of orbits go up. :P I saw the effort put into the game is there, you can tell he put quite some time into it. (Would really like to see pluto though :D)
What I really liked about this game was the original idea of using space ships in a TD game. But I think there are a few places things can be inproved. The music was nice, but it was very repetitive and I could tell it was an obvious loop. The walls were pretty hard to place and the enemies are a little weak in general. However, I think that the names were quite interesting instead of usual TD which say 'normal tower' 'bomb tower' etc. Overall it's quite a good game. 4/5
 "Protector IV.V"){kind=icon}
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 "5 Differences"){kind=icon}
 "Through the Machine"){kind=icon}
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 "New Space War"){kind=icon}
 "Initial Conflict"){kind=icon}
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 "Viricide"){kind=icon}
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