Scribblenauts Unlimted continues the series' strengths of providing a creative playground wrapped in a charming package. Nothing much has changed in scope from Super Scribblenauts, but it sure does look pretty when played on the Wii U. But despite its looks, it soon becomes apparent that the Wii U version is esentially a big DS game. There's nothing inherently wrong with that, but I found myself playing it exclusively on the gamepad without even turning my TV on. It perhaps doesn't fully capitalize on the new system's strengths.
It is also less finely structured than the previous games, which may be good or bad depending on what you want from the game. It provides a giant world with 85 starites to collect, but a lot of the progression made towards this goal come from one-off side objectives that are so simple you can use the same solution for numerous objectives. Previous games had more stringent solution requirements that forced creativity from the player. It puts the onus on the player to come up with creative ways to solve the problems, if that's something the player cares about in the first place.
The Wii U version does throw in some Nintendo characters, which is a fun little addition. From my experience it seems you can't actually solve objectives by using these branded objects, but they are still a fun tool when you just want to mess around. (Pro-tip: if you have Link fight Ganon before giving him theMaster Sword, our tunic-toting hero will not last very long.)
Scribblenauts Unlimited is fun, charming and provides a toolbox for endless creativity. It doesn't do much to change the series' status quo, but the visual upgrade provided by the Wii U and PC versions makes it a worthwhile experience for fans.