For those that complain about it crashing once you destroy the final emitter, try to go to menu and save before you kill final emitter, if it crashes just load the save and then kill the emitter. If this does not work, pretend you are a spore and fly into the wall...
@SuspiciousSquid, It would be cool to get rubies from videos and advertisements but it would be even better if they just added more achievements, which they probably are.
@DrICantStop Tube height can be increased once you get all the balls. For a large sum of money in game you can upgrade the power of ball one and make all the tubes go up in max height. You can do this multiple times and I dont know if there is a limit.