What games made you buy your current gen system or would make you buy one?

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Nautilus said:
Well, i didnt really buy for one game, i bought most because of the promise of games that i knew would come to them.So for example, JRPGS in PS4 and quality games that i knew Nintendo would deliver(I own a 3DS,WII U, PS4 and a Vita)

Well, the title is "What games" referring to multiple. 

Most people always need multiple games on a system to get one. I'm just asking for the one game, or two (or three, etc) that was the final decision in the purchase. Like for me, I would have gotten a 3DS for Pokemon, but since I knew it was coming eventually, I decided to get a 3DS early due to Fire Emblem. It was really the pushing point for me.