If you have any previous Mario Kart you're good for playing with friends physically in the room. I mean, MK8 has more tracks and carts and characters, but getting MK1 off virtual console will give 90% of the fun for 20% of the cost. But iff you want to play online, the latest is the best.
If you haven't played a Dynasty Warriors game before, give Hyrule Warriors a try. It has fun combat, hilariously lame puzzles, and big pretty bosses.
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