I don't think I can think of 5 right away since I was largely Wii most of last gen, but I would likely say
Wii Sports - What more needs to be said? It took the game industry by storm and shot Ninten tothe top for a long time and started a trend of motion controlled games, so much so that Sony and MS made their own motion control devices to catch some of the success it brought.
Call of Duty - I feel like COD started the other trend we saw spark in gaming, the FPS craze. I felt like FPS games were so popular in the last gen, which felt like a surge of them were made during this time, and COD lead the charge.
That's all I got. Personally I would also add Mario Galaxy, which really felt like next gen, with its excellent visuals and wonderful music. It was just a sight to see. : )
Dance my pretties!
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