I like this game I saw people on /v/ playing. Basically cross or mark the characters of which games you have actually played. I will include both template and mine.
I'm not going to go into the whole effort of editing it, but I will go ahead and bring up some interesting ones.
My mom bought into the whole Wii Fit craze while I was in middle school. Actually had fun with it and worked up a sweat as well. Can't say if it really had any impact on my health though.
I wasn't born yet during the NES era, but hype for Smash 4 convinced me to go buy Mega Man 2 on Virtual Console. I did beat it, but only because of save states.
I played Shadow Dragon...and got bored of it really quickly despite loving the GBA games. Probably because of a mix of boring characters and drab colors.
I found a copy of Radiant Dawn at Gamestop and managed to get it for around 60$. I can see why that game is divisive but I personally loved it. Still haven't found a reasonably priced copy of Path of Radiance though.
As for who I haven't played...
I've played both Xenoblade X and Xenoblade 2, but I haven't ever actually played the original. I liked X, but didn't really enjoy 2 that much, so I'm not really putting much consideration into going back to the play the original.
I've considered buying a Sonic game once or twice, but I never actually did it. I might give Mania a try one of these days.
I actually own the Metroid Prime Trilogy, but I got frustrated with backtracking in the first game and never got around to playing the sequels. I hear Echoes actually fixes some of Prime 1's problems, so I might give that game another chance.
I'm an active member of the FE fandom, a big fan of FE7, and I like to play as Roy in Smash...but I've never actually played FE6. Or any of the Japanese FE games, for that matter. I do know quite a bit about them through fandom osmosis however.
Big fan of Tropical Freeze, but I've never actually played the original DK trilogy. I still respect this character's inclusion in Smash and I'll probably give DKC2 a try one of these days. I personally wouldn't mind if he appeared as the antagonist again in a future DKC game either.