I haven't said that it's ok, i just said it would be the better choice to use a nickname, because this would help you to protect against a lawsuit if they try to sue him for any reason. His best option would be to ask the producer if he is fine, when the guy release his open source version of doodle jump. I think they would agree, because he doesn't earn money and doesn't seems to do anything else with it. Also it's a good ad for the product doodle jump and he also recommend to buy a copy of it.
