The game called Planet X was created by Unity under another name: Explorer.
Unity then released a 2D "kit" to make this game. I'm just using this kit to make my own levels.
It's not the same game ! "Ellen" was created from the kit donated by Unity.
I help moderate games on Gamejolt and I did not realise the game link I sent you was actually in violation of Unity Asset rules, they went crazy when I informed them about this game kit was for sale. For free there is no problem but for $10 they were not happy. If you had not told me about this I would never have known.
Thank you for telling me about this you have help prevent piracy on Gamejolt :)