First released in 2011, Sonic Generations is one of the best efforts to bring the blue hedgehog into the third dimension. Building on the boost formula established in Sonic Unleashed, Generations sought to merge 2D and 3D gameplay into a cohesive whole, but Sega never directly followed up on it – until now. Sonic X Shadow Generations‘s initial reveal made it feel like a remaster with a little extra content bolted on, but this game also serves as a full-length sequel to Sonic Generations, built using the latest version of Hedgehog Engine and packed with incredible stages for all current and last-gen consoles, plus PC. Our tech review looks at that package as a whole, comparing it to the original Sonic Generations release, discussing performance and how the Switch version in particular fares.