I haven't played Odyssey but I played a good chunk of 3D World at a friend's house. The game is well designed but it lacks any of the atmosphere or charm the previous 3D Marios had. Nintendo essentially took the engine from 3D Land and created an experience that fits the 3DS much better than the Wii U. I can remember every level from Super Mario Galaxy because Nintendo was incredibly creative with their level designs and locales. Toy Time Galaxy and Freeze flame Galaxy are some of the best levels in any 3D platformer that I have ever experienced. 3D World decided to go down a traditional route and create a forgettable game that I can barely remember. From looking at the gameplay footage for Odyssey, I can see Nintendo tried a lot harder with this game. The execution may not be perfect, but it seems like something creative and interesting. It's hard to judge however, considering the fact I haven't even played the game yet. I'll get back to you on that.
