It runs from October 20th, 2016 to November 3rd, 2016. So far, as the title suggests, the Halloween-themed deal has been announced just for US. I suppose an announcement for US will come later (if it happens, I mean).
Here's the games involved, both 3DS and Wii U
Nintendo 3DS
Luigi's Mansion 2 (Nintendo) - 31.49/£27.99 (normally 44.99/£39.99)
The Legend of Zelda: Majora's Mask 3D (Nintendo) - 31.49/£27.99 (normally 44.99/£39.99)
Resident Evil Revelations (CAPCOM) - 8.99/£7.49 (normally 29.99/£24.99)
Resident Evil The Mercenaries 3D (CAPCOM) - 3.99/£3.59 (normally 9.99/£8.99)
Gabrielle's Ghostly Groove 3D (Funbox Media) - 1.19/£0.99 (normally 3.99/£3.59)
PAC-MAN and the Ghostly Adventures (BANDAI NAMCO Games) - 6.99/£5.69 (normally 34.99/£28.49)
PAC-MAN and the Ghostly Adventures 2 (BANDAI NAMCO Games) - 6.99/£4.99 (normally 34.99/£24.99)
Shin Megami Tensei: Devil Summoner: Soul Hackers (NIS America) - 8.99/£8.09 (normally 9.99/£8.99)
Shin Megami Tensei: Devil Survivor 2: Record Breaker (NIS America) - 19.99/£17.49 (normally 39.99/£34.99)
Shin Megami Tensei: Devil Survivor Overclocked (Ghostlight) - 11.99/£9.99 (normally 34.99/£29.99)
Castlevania: Lords of Shadow Mirror of Fate (KONAMI) - 22.50/£19.99 (normally 44.99/£39.99)
Epic Word Search Holiday Special (Lightwood Games) - 6.39/£4.79 (normally 7.99/£5.99)
Escape From Zombie City (Tom Create) - 1.49/£1.34 (normally 2.99/£2.69)
Undead Bowling (Joindots) - 3.49/£2.49 (normally 6.99/£4.99)
Zombie Panic in Wonderland DX (Akaoni Studio) - 4.99/£4.49 (normally 7.00/£6.30)
GHOSTS'N GOBLINS (CAPCOM, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania (Konami, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania The Adventure (Konami, GB VC) - 2.09/£1.88 (normally 2.99/£2.69)
Castlevania III: Dracula's Curse (Konami, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania II Simon's Quest (Konami, NES VC) - 2.79/£2.51 (normally 3.99/£3.59)
GARGOYLE'S QUEST (CAPCOM, GB VC) - 2.79/£2.51 (normally 3.99/£3.59)
Gargoyle's Quest II: The Demon Darkness (CAPCOM, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Wii U
Bayonetta 2 (Nintendo) - 34.99/£27.99 (normally 49.99/£39.99)
ZombiU (Ubisoft) - 7.99/£6.39 (normally 19.99/£15.99)
Darksiders II (Nordic Games) - 12.49 /£9.99 (normally 49.99/£39.99)
Resident Evil Revelations (CAPCOM) - 9.99/£7.99 (normally 49.99/£39.99)
Resident Evil 4 Wii Edition (CAPCOM, Wii DL) - 13.99/£12.59 (normally 19.99/£17.99)
PAC-MAN and the Ghostly Adventures (BANDAI NAMCO Games) - 9.99/£9.00 (normally 39.99/£36.99)
PAC-MAN and the Ghostly Adventures 2 (BANDAI NAMCO Games) - 8.70/£6.19 (normally 34.99/£24.99)
Project Zero: Maiden of Black Water - full game upgrade (Nintendo) - 34.99/£27.99 (normally 49.99/£39.99)
Costume Quest 2 (Midnight City) - 7.49/£6.74 (normally 14.99/£13.49)
Dungeons & Dragons: Chronicles of Mystara (CAPCOM) - 4.90/£3.95 (normally 14.99/£11.99)
Extreme Exorcism (Ripstone Publishing) - 5.99/£4.49 (normally 12.99/£9.99)
Nihilumbra (BeautiFun Games) - 2.65/£1.99 (normally 8.99/£6.99)
Shadow Puppeteer (Snow Cannon) - 7.49/£6.74 (normally 14.99/£13.49)
Super Meat Boy (Blitworks) - 11.20/£10.40 (normally 14.00/£13.00)
The Binding of Isaac: Rebirth (Nicalis) - 8.99/£8.00 (normally 14.99/£13.49)
Whispering Willows (Abstraction Games) - 4.99/£3.99 (normally 9.99/£7.99)
Ziggurat (Milkstone Studios) - 9.00/£7.00 (normally 15.00/£12.00)
Year Walk (Simogo) - 3.49/£3.14 (normally 6.99/£6.29)
Don't Starve: Giant Edition (Klei Entertainment) - 6.99/£6.29 (normally 13.99/£12.59)
Lone Survivor: Director's Cut (Curve Digital) - 2.99/£2.49 (normally 11.99/£9.99)
How to Survive (505 Games) - 6.99/£6.29 (normally 13.99/£12.59)
Unepic (unepic fran) - 4.99/£4.40 (normally 9.99/£8.99)
Slender: The Arrival (Blue Isle Studios) - 4.49/£3.19 (normally 8.99/£6.39)
The Legend of Zelda: Majora's Mask (Nintendo, N64 VC) - 6.99/£6.29 (normally 9.99/£8.99)
Castlevania (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Castlevania (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania II Simon's Quest (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Castlevania Aria of Sorrow (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania Harmony of Dissonance (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania Dracula X (Konami, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Castlevania III: Dracula's Curse (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Super Castlevania IV (Konami, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Super Ghouls'n Ghosts (CAPCOM, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Super Ghouls'n Ghosts (CAPCOM, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Gargoyle's Quest II: The Demon Darkness (CAPCOM, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
GHOSTS'N GOBLINS (CAPCOM, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Devil's World (Nintendo, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Pandora's Tower (Nintendo, Wii DL) - 13.99/£12.59 (normally 19.99/£17.99)
Throw me a rancid pumpkin if old.
Here's the games involved, both 3DS and Wii U
Nintendo 3DS
Luigi's Mansion 2 (Nintendo) - 31.49/£27.99 (normally 44.99/£39.99)
The Legend of Zelda: Majora's Mask 3D (Nintendo) - 31.49/£27.99 (normally 44.99/£39.99)
Resident Evil Revelations (CAPCOM) - 8.99/£7.49 (normally 29.99/£24.99)
Resident Evil The Mercenaries 3D (CAPCOM) - 3.99/£3.59 (normally 9.99/£8.99)
Gabrielle's Ghostly Groove 3D (Funbox Media) - 1.19/£0.99 (normally 3.99/£3.59)
PAC-MAN and the Ghostly Adventures (BANDAI NAMCO Games) - 6.99/£5.69 (normally 34.99/£28.49)
PAC-MAN and the Ghostly Adventures 2 (BANDAI NAMCO Games) - 6.99/£4.99 (normally 34.99/£24.99)
Shin Megami Tensei: Devil Summoner: Soul Hackers (NIS America) - 8.99/£8.09 (normally 9.99/£8.99)
Shin Megami Tensei: Devil Survivor 2: Record Breaker (NIS America) - 19.99/£17.49 (normally 39.99/£34.99)
Shin Megami Tensei: Devil Survivor Overclocked (Ghostlight) - 11.99/£9.99 (normally 34.99/£29.99)
Castlevania: Lords of Shadow Mirror of Fate (KONAMI) - 22.50/£19.99 (normally 44.99/£39.99)
Epic Word Search Holiday Special (Lightwood Games) - 6.39/£4.79 (normally 7.99/£5.99)
Escape From Zombie City (Tom Create) - 1.49/£1.34 (normally 2.99/£2.69)
Undead Bowling (Joindots) - 3.49/£2.49 (normally 6.99/£4.99)
Zombie Panic in Wonderland DX (Akaoni Studio) - 4.99/£4.49 (normally 7.00/£6.30)
GHOSTS'N GOBLINS (CAPCOM, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania (Konami, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania The Adventure (Konami, GB VC) - 2.09/£1.88 (normally 2.99/£2.69)
Castlevania III: Dracula's Curse (Konami, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Castlevania II Simon's Quest (Konami, NES VC) - 2.79/£2.51 (normally 3.99/£3.59)
GARGOYLE'S QUEST (CAPCOM, GB VC) - 2.79/£2.51 (normally 3.99/£3.59)
Gargoyle's Quest II: The Demon Darkness (CAPCOM, NES VC) - 3.49/£3.14 (normally 4.99/£4.49)
Wii U
Bayonetta 2 (Nintendo) - 34.99/£27.99 (normally 49.99/£39.99)
ZombiU (Ubisoft) - 7.99/£6.39 (normally 19.99/£15.99)
Darksiders II (Nordic Games) - 12.49 /£9.99 (normally 49.99/£39.99)
Resident Evil Revelations (CAPCOM) - 9.99/£7.99 (normally 49.99/£39.99)
Resident Evil 4 Wii Edition (CAPCOM, Wii DL) - 13.99/£12.59 (normally 19.99/£17.99)
PAC-MAN and the Ghostly Adventures (BANDAI NAMCO Games) - 9.99/£9.00 (normally 39.99/£36.99)
PAC-MAN and the Ghostly Adventures 2 (BANDAI NAMCO Games) - 8.70/£6.19 (normally 34.99/£24.99)
Project Zero: Maiden of Black Water - full game upgrade (Nintendo) - 34.99/£27.99 (normally 49.99/£39.99)
Costume Quest 2 (Midnight City) - 7.49/£6.74 (normally 14.99/£13.49)
Dungeons & Dragons: Chronicles of Mystara (CAPCOM) - 4.90/£3.95 (normally 14.99/£11.99)
Extreme Exorcism (Ripstone Publishing) - 5.99/£4.49 (normally 12.99/£9.99)
Nihilumbra (BeautiFun Games) - 2.65/£1.99 (normally 8.99/£6.99)
Shadow Puppeteer (Snow Cannon) - 7.49/£6.74 (normally 14.99/£13.49)
Super Meat Boy (Blitworks) - 11.20/£10.40 (normally 14.00/£13.00)
The Binding of Isaac: Rebirth (Nicalis) - 8.99/£8.00 (normally 14.99/£13.49)
Whispering Willows (Abstraction Games) - 4.99/£3.99 (normally 9.99/£7.99)
Ziggurat (Milkstone Studios) - 9.00/£7.00 (normally 15.00/£12.00)
Year Walk (Simogo) - 3.49/£3.14 (normally 6.99/£6.29)
Don't Starve: Giant Edition (Klei Entertainment) - 6.99/£6.29 (normally 13.99/£12.59)
Lone Survivor: Director's Cut (Curve Digital) - 2.99/£2.49 (normally 11.99/£9.99)
How to Survive (505 Games) - 6.99/£6.29 (normally 13.99/£12.59)
Unepic (unepic fran) - 4.99/£4.40 (normally 9.99/£8.99)
Slender: The Arrival (Blue Isle Studios) - 4.49/£3.19 (normally 8.99/£6.39)
The Legend of Zelda: Majora's Mask (Nintendo, N64 VC) - 6.99/£6.29 (normally 9.99/£8.99)
Castlevania (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Castlevania (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania II Simon's Quest (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Castlevania Aria of Sorrow (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania Harmony of Dissonance (Konami, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Castlevania Dracula X (Konami, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Castlevania III: Dracula's Curse (Konami, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Super Castlevania IV (Konami, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Super Ghouls'n Ghosts (CAPCOM, SNES VC) - 5.59/£3.84 (normally 7.99/£5.49)
Super Ghouls'n Ghosts (CAPCOM, GBA VC) - 4.89/£4.40 (normally 6.99/£6.29)
Gargoyle's Quest II: The Demon Darkness (CAPCOM, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
GHOSTS'N GOBLINS (CAPCOM, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Devil's World (Nintendo, NES VC) - 3.49/£2.44 (normally 4.99/£3.49)
Pandora's Tower (Nintendo, Wii DL) - 13.99/£12.59 (normally 19.99/£17.99)
Throw me a rancid pumpkin if old.
