For example, both Contra and Jackal, as well as the first Teenage Mutant Ninja Turtles game were made for arcade systems, and Nintendo. With Contra and Jackal, those games look and play much better in the arcade than at home. And the gameplay on the first TMNT in the arcade is much more fluid, the details more rich, and the sprites much more animated than any of the NES games about the turtles. Why is that? Why couldn't Nintendo and developers put the same level of quality into those games?