I'm guessing PS+ games don't count.

PS4:
inFAMOUS: Second Son
Injustice: Gods Among Us Ultimate Edition (digital)
Child of Light (digital)
The Last of Us Remastered
Destiny
Dragon Age: Inquisition
Far Cry 4
Grand Theft Auto 5
Final Fantasy Type-0 HD
Mortal Kombat X
The Witcher 3: Wild Hunt
Batman: Arkham Knight
FIFA 15 (digital)
NBA 2K15 (digital)
The Walking Dead Season One (digital)
The Wolf Among Us (digital)
Bastion (digital)
Metal Gear Solid V: Ground Zeroes (digital)
Yu-Gi-Oh! Legacy of the Duelist (digital)

Vita:
Final Fantasy X/X-2 HD Remaster
Persona 4 Golden (digital)
Zero Escape: Virtue's Last Reward (digital)
Tales of Hearts R (digital)
Freedom Wars (digital)

Wii U:
Super Smash Bros.
Mario Kart 8

So 26 total games (13 physical and 13 digital). Could have had like 9 more physical but I sold them after finishing them.

Ummm I guess mine would be:

Wii U: Super Mario Maker, Mario Kart 8, Nintendo Land, Super Smash Bros. Wii U, Super Mario 3D World

3DS: Pokemon X & Y, Pokemon AS, New Super Mario Bros 2, Super Mario 3D Land, Mario Kart 7, Animal Crossing: New Leaf, Shin Megami Tensei IV, Tomodatchi Life, SSB 3DS (possibly others)

Vita: Hatsune Miku Project Diva F, Gravity Rush, FFX/X-2 HD, Persona 4: The Golden, Sayonara Umihara Kawase, Akiba's Trip, Atelier Totori Plus, Need for Speed: Most Wanted Vita

There's probably more. But I've been collecting more for other systems so I don't exactly have a large collect of current games since I've also been collecting for NES, PS2, PS3, DS, PSP, and Wii as well v.v XD

I don't have a collection, I just play games and pass them on.
Currently I own:
- Borderlands The Handsome Collection (retail)
- Until Dawn (promo disc)
- Destiny The Taken King (digital)

That should be enough to keep me busy until New Year.

Needs moar Wii U. :p

Yeah, I'm probably getting a PS4 next year.

We can't be friends if you don't own DKC: TF! ;(

PS4:

Killzone: Shadow Fall
Knack
inFamous: Second Son
inFamous: First Light
Tomb Raider: Definitive Edition
Rayman Legends
DriveClub
LittleBigPlanet 3
Diablo III: Reaper of Souls - Ultimate Evil Edition
Lords of the Fallen
Assassin's Creed Unity
Dragon Age: Inquisition
Grand Theft Auto V
Resident Evil: Revelations 2
Batman: Arkham Knight
The Witcher 3
Bloodborne
Metal Gear Solid V: Ground Zeroes
Metal Gear Solid V: The Phantom Pain

Wii U:

New Super Mario Bros. U
New Super Luigi U
Nintendo Land
Pikmin 3
Game & Wario
Super Mario 3D World
The Legend of Zelda: The Wind Waker HD
Bayonetta 2
Mario Kart 8
Donkey Kong Country: Tropical Freeze
Assassin's Creed III
Call of Duty Black Ops 2
Zombi U
Splatoon
Hyrule Warriors

3DS:

Super Street Fighter IV: 3D Edition
The Legend of Zelda: Ocarina of Time 3D
The Legend of Zelda: Majora's Mask 3D
The Legend of Zelda: A Link Between Worlds
Super Mario 3D Land
Resident Evil Mercenaries 3D
Resident Evil Revelations
Pilotwings
Fire Emblem Awakening
Pokémon X
Pokémon AS
Kid Icarus: Uprising
Luigi's Mansion 2: Dark Moon
Mario Kart 7

Total: 19 PS4 / 15 Wii U / 14 3DS = 48 physical games

I didn't put digital games cause I cant remember all of them and a lot were given by PS Plus, but I guess I should have 30~35 digital titles on PS4, 3 on 3DS and 2 on Wii U. Most of the PS Plus games I deleted anyways, but some were true gems I'm glad to have found.

PS4 (not counting PS Plus titles, unless I bought them beforehand):
Diablo III
Grand Theft Auto V
Destiny
Shadow of Mordor
Bloodborne (Digital)
Infamous: Second Son (Digital)
The Last of Us: Remastered (Digital)
Final Fantasy Type-0: HD (Digital)
Assassin's Creed IV: Black Flag (Digital)
Metal Gear Solid V: The Phantom Pain (Digital)
Injustice: God Among Us (Digital)
Transistor (Digital)
Grim Fandango: Remastered (Digital)
TowerFall Ascension (Digital)
Strider (Digital)
Journey (Digital)
Peggle 2 (Digital)
Trine 2: Complete Story (Digital)
Entwined (Digital)
Sound Shapes (Digital)
Child of Light (Digital)
SteamWorld Dig (Digital)
Awesomenauts Assemble! (Digital)
Flower (Digital)

3DS
Animal Crossing: New Leaf
Fire Emblem: Awakening
Legend of Zelda: Ocarina of Time 3D
Pokémon Alpha Sapphire
Pokémon X
Devil Survivor Overclocked
Phoenix Wright: Ace Attorney -- Dual Destinies (Digital)

PlayStation TV (yup, I own one)
Persona 4: Golden
Dangan Ronpa: Trigger Happy Havoc
Dangan Ronpa 2: Goodbye Despair

Physical:

GTA V
Driveclub

Digital:

Infamous: Second Son
God Of War III: Remastered
Until Dawn

All on PS4. I'll get Uncharted: NDC and Fallout 4 later this year. Not bad at all for my week old PS4, and I've not yet completed any of these games.

Perhaps someday! My girlfriend is making me get Splatoon and Wind Waker HD soon on top of that I need to keep track of XCX and Persona 5 coming out soon... and hopefully SMTxFE isn't till 2016 x.x

Tagged for when I take pics this weekend....