Don't forget that Resident Evil: Revelations has received a price cut for both Wii U and Nintendo 3DS for the Halloween season, so if you haven't picked it up yet, it's a great download for only $19.99 on Wii U (down from $49.99) and $9.99 on 3DS.
Also, the Nintendo 3DS is offering Resident Evil: The Mercenaries 3D for $9.99 as well.
The only downside to downloading Revelations on Wii U is that the file size is around a whopping 15GB, a little less than half of the Wii U's 32GB storage space. Just make sure you have an external drive or memory card before downloading.
The sale is going on now 'til Halloween.