There are not one but two sales going on in the European PlayStation Store right now, and that means there’s a massive amount of games you can save money on! The Only on PlayStation Sale has sales on games that are, unsurprisingly, only available on PlayStation. Meanwhile, the Digital Zone sale helps you sale on indie titles.
We have the complete list of titles on sale, complete with links provided by the PlayStation.Blog.
The Only on PlayStation sale has:

Horizon Zero Dawn?
Horizon Zero Dawn? Digital Deluxe Edition
The Last of Us? Remastered
Journey? Collector?s Edition
inFAMOUS? First Light
DRIVECLUB?
DRIVECLUB? BIKES
DRIVECLUB? BIKES Expansion
DRIVECLUB? Season Pass
DRIVECLUB? VR
DRIVECLUB? Full Game for PlayStation®Plus
Uncharted? 1: Drake?s Fortune Remastered
Uncharted? 2: Among Thieves Remastered ALIENATION? Conqueror?s Pack
ALIENATION? DLC Season Pass
Everybody?s Tennis
Hohokum?
Escape Plan?
Escape Plan? Collection
Patapon? Remastered
Hustle Kings? VR
Wild Arms 3
HELLDIVERS? Reinforcement Pack
Insurgent Pack
Sound Shapes? Ultimate Bundle
Primal
Arc the Lad: Twilight of the Spirits
Intercept Online Co-op Expansion Pack
Forbidden Siren
HELLDIVERS? Reinforcement Pack 2
The Mark of Kri
StarBlood Arena?
Hardware: Rivals
Doki-Doki Universe?
Malicious? Fallen
Malicious? Fallen Digital Deluxe Edition
OKAGE: Shadow King
Rise of the Kasai
FantaVision
Kinetica
Drawn to Death?
Escape Plan? ? The Asylum
Giana Sisters: Twisted Dreams ? Director?s Cut
Super Mega Baseball
...