Xbox One: Gears of War. Something similar to any of the first three Gears games and the Xbone is mine.
PS4: Not really interested by this one, but it's cheaper than the Xbox One so... I'll wait.
Wii U: Nintendo bought my purchase with Pikmin 3 back in 2012, I already have the console.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.