So as I go into 2018, I realized that this is going to be a very concervative year for me as a gamer.  I will have to buckle down and be picky with my purchases.  As sad as this makes me, it does give me time to visit my backlog of games I have, but have yet to play, or games I would like to revisit.  So here is my backlog...

Switch

Revist Xenoblade 2 later on for all the side content.

BotW DLC and hard mode playthrough

Skyrim (magic build)

Mario Plus Rabbids

Fire Emblem Warriors

Finish last chapter of Lego City

Resident Evil Revelations 1/2

WiiU

Xenoblade Chronicles X

PS4

Metal Gear Solid 5

Dark Souls 3

GTA5 (dunno why thia game has not clicked with me yet...)

Uncharted 4 (I know I know, I should have done this one long ago...)

PS3

Star Ocean: The last hope

Dungeons and Dragons

I will never finish this backlog, as there are games this year I will still buy.  Have not even seen the Jan direct yet.  But since I have limited funds due to just buying a house and a new 2017 Silverado and therefore I will be focusing on saving back up, at least I can finally take a crack at some of it.

What are your backlogs going into 2018?

A lot of games. Too many.
Switch: Just one, Azure Strike Gunvolt pack, before I get more games.
PC: A lot, between my Steam ones and the ones that arent. At least 20-30 games.
3DS: Just Etrian Odyssey V and FE Echoes.
And that's not counting the emulated games I'll play.

Looking at 2018, I'm not going to be buying a game anytime soon.

I'm currently playing through Horizon Zero Dawn (got it for Chrimbo, it's amazing).

Games I have to play or finish:
FF12 - to finish, stopped, no idea why just not gone back.
MvCUltimate - Christmas present, I should play really but it can be a casual thing.
Nier Automata - Just to finish the plat as it seems an easy one.
Deadpool - played about 6 hours, need to finish it.

From PSN that I've yet to play:
Deus Ex - From this month.
inFamous Second Son - downloaded and install, never pressed X on it.
Child of Light - again, downlaoded, install never pressed play.

This doesn't include the fact I still want to play Overwatch and Tekken 7 when I can whether with friends or not. Haven't played any placements in Overwatch yet since they did their really weird short season, finished plat last.

Games that I have yet to play:

-Undertale (PC)
-About half of the games on the SNES Mini

Games that I have yet to finish:

-Zelda: Breath of the Wild (NS)
-Shovel Knight Treasure Trove (NS) (I have finished the main game, but I have yet to do all of the DLC.)
-Splatoon 2 (NS)
-Super Mario Odyssey (NS) (I finished the main game, but I haven't revisited all of the kingdoms yet.)
-Some SNES Mini games.
-Monster Hunter 4U (3DS)
-Zelda: Majora's Mask (3DS)
-Pokémon Yellow (3DS)
-Zelda: Oracle of Seasons (3DS)
-Zelda: Twilight Princess (Wii)
-Steamworld Dig (PC)
-Plants vs Zombies (PC)

Ah crap, I forgot about Final Fantasy XV.  I stopped around 40 hours when BotW came out and never really went back.  I need to finish that as well.

109 games on the Xbox360
112 games on the XOne
cca. 55 games on PC
And haven't touched the SNES Mini yet.

So, yeah. Probably never gonna finish all of them.

Way too many games to even list, but I guess I'll go over the most notable ones.

XBox 360:

Lost Odyssey

PS2:

Phantom Brave (Currently playing this one)

PS3:

Borderlands: The Pre-sequel

Suikoden II (PSN)

PS4:

MGS V

Yakuza 0

Final Fantasy Type-0 HD (I've played it quite far, but need to go back to finish it at some point)

Horizon Zero Dawn

PSP:

Star Ocean: Second Evolution (Playing this one too at the moment)

PC:

Monkey Island 2

Ys: Oath in Felghana

Valley

Life is Strange

Grim Fandango

Psychonauts

Grandia II

Jotun

And many more. That's just the ones I could think of right now.

I don't have a backlog, I play what I feel like playing, be it a new game or one I already played, usually the latter.

switch: Zelda & Stardew

ps4: Batman Telltale Series, Amnesia, Last Guardian, FFXII, Persona 5, Dishonoured 2,

My backlog goes all the way back to the ps2... so I’m not going to list them all... it is obviously a lot...