If you complete perfect waves (i.e. without losing any of your twenty babies) you are
given coin bonuses after the wave to further help with proceedings.
Meanwhile the largest buyer so far with 52BTC stands to earn a 1M Gene -
Chain coin bonus.
I just checked and it says I have until February 16, 2014 to register Fire Emblem: Shadow Dragon and get the 10
coin bonus.
So completing the Bronze tournament on Amateur will give you a 400
coin bonus but on World Class that might move to nearer 1000 coins.
The final level is a variation of Mario Bros. «collect all
the coins bonus stages, except the coins have been replaced with dollar signs.