I'll just list games coming out this year because I buy a lot of classic games every year usually at pure random. So...

Scalebound
Bloodborne
Dark Souls II: Scholar of the First Sin
Uncharted 4
The Order 1886
Quantum Break
The Witcher III: Wild Hunt
Halo 5
Yoshi: Wooly World
Shantae: Half-Genie Hero
Xenoblade Chronicles X
The Legend of Zelda
Metal Gear Solid V: The Phantom Pain
Persona 5
Mario Maker
Majora's Mask 3D
Xenoblade 3D
Project STEAM
Tekken 7 (if it comes out in 2015)
No Man's Sky
Mighty No. 9
Shovel Knight

Won't be able to buy all of them of course but that's my wishlist more or less...

Software

This year has really not many things for me, but maybe I'll be surprised.

-Puzzles and Dragons combo
-Fire Emblem IF
-MD Etrian Odyssey.
-Mighty Nº9
-Maybe GTA V for PC when it's discounted.
-Kid Ikarus Uprising if I find it cheap.
-Maybe something new announced at E3?

Hardware

If I save enough money I'll get a WiiU. If I don't buy one by summer, I'll just wait for the next console.

Xbox One:
1. Halo 5
2. Quantum Break
3. Ori
4. Xbox Live Gold
5. Rise of a Tomb Raider

Nintendo:
1. New 3DS
2. Wii U
3. Zelda Wii U
4. Xenoblade X

PS4:
1. Persona 5
2. Witcher 3
3. Bloodborne
4. Until Dawn
5. Metal Gear Solid V
6. Batman
7. Uncharted 4
8. PS4 console
9. PS+

Bloodborne
Until Dawn
Uncharted 4
Dragon Quest: Heroes
Witcher 3
Arkham City
No Man's Sky

I'll format after Booble. From what we know... 

Xbox One/360: 
-Halo 5 (day one) 
-TR RotTR (day one) 
-Quantum Break (if it's not 2016, wait till it's $40) 
-Ori (day one) 
-NHL 16 (day one) 
-FF Type Zero (Pre-ordered/day one)
-Witcher 3 (reduced buy ~$40)
-Dragon ball Xenoverse ($30-$40 reduced buy) 

Wii U/3DS
-XCX (day one) 
-Yoshi's Wooly World (day one)
-Zelda (day one) 
-New 3DS XL (Fire Emblem/Pokemon special edition)
-Fire Emblem 3DS (if it comes out this year/day one) 
-Bravely Second (if it comes out this year/day one)
-Zelda MM 3DS (reduced buy) 

PS4/PS3
-Uncharted (reduced) 
-The Order 1886 ($20 on BF)
-Persona 5 (PS4/Collector's Edition/Day One) 
- Tales of Zestiria (Reduced later buy) 

**Will add more if I remember. 

My 2015 to buy list.
The Order 1886
Final Fantasy Type-0
Bloodborne
The Tomorrow Children
Uncharted 4
No Man's Sky
Metal Gear Solid 5
Persona 5

Sword Art Online: Lost Song [Vita]

The second Media Molecule game*
Final Fantasy 15*


*Don't know if it's coming in 2015

Majora's Mask 3D, Mario Party 10, Splatoon, Yoshi's Woolly World, Xenoblade Chronicles X, Zelda U

PC. I suspect this list will grow a lot during the year
Mortal Kombat X
Far Cry 4 - Limited Edition
Batman: Arkham Knight
Project CARS
The Witcher 3: Wild Hunt
Grand Theft Auto V
Star Craft: Legacy of the Void

All day one except Far Cry 4 as I was still playing FC3 at release.

Wii U
Bayonetta 2
Xenoblade Chronicles X
The Legend of Zelda
Super Smash Bros

I've had Wii U apathy for a while now but I see myself purchasing those games at one point or another during 2015.

All the Amiibo.

I don't think I'll have money left for anything else, gaming or otherwise.

-PS4
-Watch Dogs
-Splatoon
-Zelda U
-Xeno X
- Xeno 3D
-BoodBorne
-Infamous SS
-Uncharted 4