Don ' t remember Daffy looking like a priest . Not sure about Donald . <| sep |> Hmm . technically , if you are using Unity or Unreal , you are already using a third party asset to make your game the engine itself . And even if you wrote your own engine you worte it in c or java , right ? So you didn ' t use your own programming language . In that case , using even more third party stuff for your game isn ' t more immoral . You already build the game using other people ' s work and that is ok . EDIT However from the player ' s perspective , it is always more interesting if your game doesn ' t use same art assets as other games that ' s obvious . It ' s not a matter of morality , but originality . <| sep |> I see that as an almost certainty . They would tell us , but I suspect someone here will report it first .