3DS, PC, and Wii U
Although our review is for the Wii U version of Shovel Knight, I had a chance to test out all three versions -- and since all three platforms are utterly different in nature, it can be pretty tough to decide between them. Here's the rundown on the 3DS, PC, and Wii U versions.
On 3DS, the 3D isn't overstated, and provides a pretty nice effect. It's certainly not required, nor does it feel like the primary platform, but in a few levels in particular it makes the obstacles a bit more pronounced. It looks relatively the same as the other versions, and plays great either with the circle pad or the d-pad. It also has a StreetPass arena mode for asynchronous multiplayer, which is great if you have a local friend who you can enjoy the game with.
Both the Wii U and the 3DS version have support for quick item switching, by way of tapping the GamePad and the lower screen respectively. Think Mega Man X -- where you can instantly switch items by tapping the icon (projectiles and defensive abilities) on the fly. You can still pause the game in any version and select them from a menu, but the tap method feels a lot more natural. The Wii U specifically supports Remote Play and a small amount of Miiverse posting. You can also use a Pro Controller, Wiimote, or Classic Controller instead of the GamePad.
\ We've blogged about this before: read (108) back stories
Out of all three platforms, I'd heartily recommend the Wii U. With Remote Play and Miiverse support, it edges out the other platforms a bit. Plus it only feels natural to play a Mega Man and Zelda II homage on a Nintendo console. Either way though you really can't go wrong.
If you want to check on the status of all the Kickstarter stretch goals, read this.