Protip: After pulling a blue string, you can push it instead of simply letting go. This launches your shape! Also, to a comment prior to mine, Eva shouldn't snap blue lines, as her corners are somewhat rounded.
Sometimes it cheats you, but sometimes you get really lucky! I just had a blowout round: 10500 to -150 in 5 turns, all that frustration has been repaid!
i played back through another time to see if there was some kind of different ending if you had all the gems, i was dissappointed... oh andone question: why the heck am i a snowball!?
 "Polygonal Fury"){kind=icon}
 "String Theory 2"){kind=icon}
 "Epic War 2"){kind=icon}
 "oO"){kind=icon}
 "Areas"){kind=icon}
 "Zilch Mobile"){kind=icon}
 "Viricide"){kind=icon}
 "Effing Worms 2"){kind=icon}
 "My Big Friend"){kind=icon}
 "Shameless clone"){kind=icon}
 "Epic Friends"){kind=icon}
 "Pinata Hunter"){kind=icon}
 "Fracuum"){kind=icon}
 "Super Villainy"){kind=icon}
 "Fixation"){kind=icon}
 "Reactance"){kind=icon}
 "Death vs. Monstars"){kind=icon}
 "Please unlock"){kind=icon}
 "Tasty Planet"){kind=icon}
 "Bullet Heaven"){kind=icon}