The next in High Moon's stellar "Cybertron" series of games, Fall of Cybertron is a sequel in every sense of the word. Bigger, arguably better, and crammed with more of the stuff Transformers fans want - like Dinobots and Insecticons. The gameplay remains relatively unchanged, but there's a more linear nature to preceedings, doing away with optional three-player co-op and instead guiding players down a strict narrative. I find that this is an improvement - the story, I think, is worth sacrificing the nontheless appealing co-op features.
More Transformers goodness, made by honest-to-god Transformers fans, for Transformers fans, hooked along on shooter gameplay that is enjoyable in its own right. Transforming is as fun as it's ever been, and seeing familiar faces (and hearing familiar voices, and, at some points, seeing familiar scenes play out...!) is a masterful way of appealing to Gen X.