Ok, Lets Do this..
Last January I got a New 3DS, which means I'm almost a year with a NEW 3DS.. I also lost my 3DS for a few weeks in November, which dropped the numbers down a from what I hoped it would be.
Out of 73 titles and 214 hours and 11 mins of "Game play", my top 5 games where:
1. Super Smash Bros - 39 hours 46 Min
2. Pokémon Omega Ruby - 37 Hours 17 min
3. Xenoblade Chronicles 3D - 36 Hours 6 Min
4. StreetPass Plaza - 28 Hours 35 Min
5. Pokémon Shuffle - 20 Hours 22 Min
Since I got 2DS as well.. and I'll put them where the 2DS would have gotten on my 3DS. With only 13 titles and 36 Hours, on my secondary 2DS.
1. StreetPass Plaza - 9 hours 56 Min (placed between 7th-8th on my N3DS, (MH3U and Tomadachi Life, btw))
2. Pokémon Shuffle - 9 hours 39 Min (placed between 7th-8th on my N3DS)
3. Pokémon Alpha Sapphire - 5 Hours 29 min (placed 12th-13th on my N3ds which is Miiverse and my last purchase of 2015 SMT: DSO)
4. Pokémon X - 5hours 17 min. (Still 12th-13th by a 5 minutes.)
5. Pokémon ORAS Demo 3 hours 22 Min (14-15 on my N3DS, (Pokémon Black2, and eShop!)
I'd post the results for Original 3DS console, but since I've never really played on it since the wipe. There is no point.
I'm surprised how much I got Streetpass plaza usage, Perhaps it was the fact I was forced to go out almost every single day for first half of the year and I'd always fill up my plaza each day.. the million on my N3DS steps seem suggest it. (The 2DS had respectable half million steps on it too, as it was in my bag for most of those trips too)
Also, with I've been enjoying PSN+ a bit, and managed to get 39 hours and 1 Trophy (
I'm going to NepNep you!) from Planitum on one PS Vita game, I'm not surprised how low the time is for my 3DS..