Sorry for the late replay, I have not been monitoring the page very well. That will be changing soon. If you press the tab key, all three characters will jump and it doesn't take away from your characters' individual jump counts. Maybe you can find out what is after the houses with that bit of info.
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Thanks for the comment and Let's Play! We made this game this past weekend for the Athens Game Jam, so we only had 48 hours. You can jump all three characters at once by pressing tab. That doesn't take away from your individual character jump counters.