To be honest, this feels more like an expansion pack than a sequel but that's okay. This game is as good as the original with improved mechanics and a much tighter focus (story-wise). The upgrade system is really good too.
Levels are amazing, more-opened and well-designed most of the time. The final chapter is short but awesome with non-stop action when transitioning from one character to another to an grand choir.
Buy both of these games new to show support towards High Moon Studios because we don't know if we'll get a proper sequel, not more lazy film-tie-ins like Rise of the Dark Spark.
I can picture it! Transformers: Return to Cybertron, mostly taking place on Earth but in the same as the 1986 movie, with humans and Autobots getting along, with more lovely locations. This could happen if we support the first two games.